44 + Interview Questions in Traction Drives in Electric Drives Page 1 InterviewSolution

1.	Which type of grounding is used to suppress the capacitive effect?(a) Solid grounding(b) Reactance grounding(c) Resistance grounding(d) Peterson coilThis question was posed to me during an online interview.This is a very interesting question from Traction Drives in division Traction Drives of Electric Drives
Answer» The CORRECT CHOICE is (d) Peterson coil To explain I WOULD say: Peterson coil or resonance grounding is used to suppress the capacitive EFFECT. The FREQUENCY in resonance grounding is ω^2 = 1÷(3LC).

Discussion

2.	Calculate the value of impedance using the data: R=2 Ω, XL=4 Ω.(a) 5.5 Ω(b) 5.4 Ω(c) 2.5 Ω(d) 4.4 ΩI got this question in quiz.Question is taken from Traction Drives topic in division Traction Drives of Electric Drives
Answer» Right option is (d) 4.4 Ω To explain I would SAY: The value of impedance is {(R)^2+(XL)^2)^.5 = (4+16)^.5 = 4.4 Ω. It is total impedance offered by an AC CIRCUIT. It is expressed in Ω.

Discussion

3.	Calculate the apparent power using the data: P=3 W, Q=4 VAR.(a) 5 VA(b) 6 VA(c) 9 VA(d) 2 VAThis question was addressed to me in an internship interview.The doubt is from Traction Drives topic in division Traction Drives of Electric Drives
Answer» The correct answer is (a) 5 VA Explanation: The apparent POWER is the product of the VOLTAGE and current CONJUGATE PHASOR. The value of apparent power is (9+16)^.5 = 5 VA.

Discussion

4.	Calculate the active power in 56 μF capacitor if the VRF value is 5.1%.(a) 6 W(b) 0 W(c) 9 W(d) 2 WThis question was addressed to me during an internship interview.This intriguing question comes from Traction Drives topic in division Traction Drives of Electric Drives
Answer» Correct choice is (b) 0 W To explain I would SAY: The capacitor is a LINEAR element. It only absorbs reactive power and stores it in the form of oscillating energy. The voltage and current are 90° in phase in case of the capacitor so the angle between V & I is 90°. P = VIcos90° = 0 W.

Discussion

5.	Calculate the power factor using the data: P=15 W, S=25 VA.(a) 0.5(b) 0.9(c) 0.4(d) 0.6This question was posed to me by my school principal while I was bunking the class.I'm obligated to ask this question of Traction Drives topic in chapter Traction Drives of Electric Drives
Answer» The CORRECT choice is (d) 0.6 To explain I WOULD say: The POWER factor is the RATIO of active power and apparent power. The value of the power factor is P÷S=15÷25=.6.

Discussion

6.	Calculate the active power in 14 μH inductors if the THD value is 58.1%.(a) 5 W(b) 9 W(c) 4 W(d) 0 WThis question was posed to me during an interview.My question comes from Traction Drives in division Traction Drives of Electric Drives
Answer» Correct choice is (d) 0 W To elaborate: The INDUCTOR is a linear ELEMENT. It only absorbs REACTIVE POWER and stores it in the form of oscillating energy. The VOLTAGE and current are 90° in phase in case of the inductor so the angle between V & I is 90°. P = VIcos90° = 0 W.

Discussion

7.	If induction motor rotor power is 26 KW and gross developed power is 21 KW, then rotor ohmic loss will be _________ KW.(a) 5(b) 6(c) 7(d) 8I had been asked this question during a job interview.The doubt is from Traction Drives in chapter Traction Drives of Electric Drives
Answer» CORRECT answer is (a) 5 Best explanation: Rotor ohmic losses are DUE to the resistance of armature WINDINGS. NET input power to the rotor is equal to the sum of rotor ohmic losses and mechanically developed power. Rotor ohmic losses=Air GAP power-Mechanical developed power=26-21=5 KW.

Discussion

8.	If induction motor air gap power is 11 KW and mechanically developed power is 2 KW, then rotor ohmic loss will be _________ KW.(a) 8(b) 10(c) 9(d) 11This question was addressed to me during an online exam.I'd like to ask this question from Traction Drives topic in portion Traction Drives of Electric Drives
Answer» The CORRECT option is (c) 9 The explanation: Rotor ohmic losses are due to the resistance of armature windings. Net input power to the rotor is equal to the sum of rotor ohmic losses and mechanically DEVELOPED power. Rotor ohmic losses = AIR gap power – MECHANICAL developed power = 11-2 = 9 KW.

Discussion

9.	Skin effect increases at higher frequencies.(a) True(b) FalseI have been asked this question during an online interview.This intriguing question originated from Traction Drives in section Traction Drives of Electric Drives
Answer» Correct option is (a) True Easy EXPLANATION: SKIN effect INCREASES with the increase in FREQUENCY. The VALUE of skin depth decreases with the increase in frequency.

Discussion

10.	Which is the most severe type of fault?(a) LL(b) LLG(c) LLL(d) LLLGI had been asked this question by my school teacher while I was bunking the class.My question comes from Traction Drives topic in chapter Traction Drives of Electric Drives
Answer» Correct choice is (d) LLLG Easy explanation: LLLG FAULT is the most SEVERE type of fault. The order of severity is maximum for LLLG fault. LG fault is more severe at the GENERATOR TERMINALS.

Discussion

11.	SVC is used to maintain the power factor above __________(a) .2(b) .5(c) .8(d) .6I had been asked this question in an online quiz.The query is from Traction Drives in division Traction Drives of Electric Drives
Answer» Right CHOICE is (c) .8 To elaborate: SVC stands for static var COMPENSATOR. It is the FACTS CONTROLLER used for REDUCING the harmonics from the system. It is used for reactive power compensation.

Discussion

12.	The circuit which operates signals is called as ___________(a) Track circuit(b) Fellow circuit(c) Ground circuit(d) Unit circuitThis question was addressed to me in an interview.I need to ask this question from Traction Drives in portion Traction Drives of Electric Drives
Answer» CORRECT answer is (a) TRACK CIRCUIT Easy explanation: The circuit which operates signals is CALLED track circuit. Its supply consists of low AC or DC voltage supply. Running rail is used as the return line for the track circuit.

Discussion

13.	Full form of STATCOM is ___________(a) Static Synchronous Counter(b) Static Synchronous Compensator(c) State Synchronized Compensator(d) State System CounterThe question was posed to me during an interview for a job.I need to ask this question from Traction Drives topic in section Traction Drives of Electric Drives
Answer» The correct choice is (b) STATIC Synchronous Compensator For EXPLANATION: The full FORM of STATCOM is a Static synchronous compensator. It is a voltage source converter. It maintains the voltage profile of the SYSTEM. It is a FACTS controller.

Discussion

14.	Full form of SVC is ___________(a) Static Var Compensator(b) Static Variable Counter(c) State Value Counter(d) Static Value CompensatorI had been asked this question in homework.Question is from Traction Drives in portion Traction Drives of Electric Drives
Answer» Correct option is (a) Static VAR Compensator The explanation is: The FULL form of SVC is Static Var Compensator. It is a FACTS controller used for REACTIVE POWER compensation. It maintains the voltage profile.

Discussion

15.	Full form of HVAC is _________(a) High Voltage Alternative Current(b) High Voltage Alternating Current(c) High-Value Alternating Combination(d) High-Value Alternative CounterI got this question by my college director while I was bunking the class.My question is taken from Nature of Traction Load topic in section Traction Drives of Electric Drives
Answer» Right choice is (b) High Voltage ALTERNATING Current The explanation: FULL form of HVAC is High voltage alternating current. It is mostly PREFERRED for smaller distances. HVAC has HIGHER losses than HVDC.

Discussion

16.	Full form of HVDC is _________(a) High Voltage Direct Current(b) High Voltage Distribution Combination(c) High-Value Direct Current(d) High-Value Distribution CombinationThis question was addressed to me in an online quiz.The query is from Nature of Traction Load in division Traction Drives of Electric Drives
Answer» The correct CHOICE is (a) High Voltage DIRECT CURRENT Easy explanation: Full form of HVDC is High voltage direct current. HVDC is more preferred than HVAC because of MINIMUM losses.

Discussion

17.	The value of area under force-time graph is _________(a) Reaction(b) Change in momentum(c) Force(d) TorqueI had been asked this question during an interview.Query is from Nature of Traction Load topic in portion Traction Drives of Electric Drives
Answer» CORRECT answer is (b) CHANGE in momentum For explanation I would say: The VALUE of the area under a FORCE-time graph is a change in momentum. The force is the ratio of change in momentum with RESPECT to time.

Discussion

18.	The value of area under acceleration-time graph is _________(a) Velocity(b) Displacement(c) Force(d) ImpulseThe question was posed to me in an interview for job.This key question is from Nature of Traction Load in chapter Traction Drives of Electric Drives
Answer» The correct CHOICE is (a) VELOCITY The BEST EXPLANATION: The value of the area under an acceleration-time graph is velocity. The acceleration is the ratio of velocity and time.

Discussion

19.	The value of area under a velocity-time graph is _________(a) Acceleration(b) Displacement(c) Force(d) MomentumThis question was addressed to me in final exam.My question is taken from Nature of Traction Load in section Traction Drives of Electric Drives
Answer» The CORRECT OPTION is (B) Displacement Explanation: The value of the area under a velocity-time GRAPH is displacement. The velocity is the ratio of displacement and time.

Discussion

20.	Calculate the value measured by Moving Iron when a sinusoidal voltage signal V(t) = √2sin(3ωt) is applied to it.(a) 2 V(b) 1 V(c) 3 V(d) 4 VThis question was posed to me in an online quiz.My query is from Nature of Traction Load in chapter Traction Drives of Electric Drives
Answer» RIGHT choice is (B) 1 V The EXPLANATION is: Moving iron instrument measures the r.m.s value of the input SIGNAL. The r.m.s value of the sinusoidal signal is √2÷√2 = 1 V.

Discussion

21.	Calculate the value of the coefficient of adhesion for dusty rails if the value of the coefficient of adhesion for dry rails is .55.(a) 0.65(b) 0.89(c) 0.97(d) 0.48This question was posed to me in examination.Enquiry is from Nature of Traction Load topic in section Traction Drives of Electric Drives
Answer» Right answer is (d) 0.48 For explanation I would say: The value of the coefficient of adhesion for DUSTY RAILS is .48. The value of the coefficient of adhesion for DRY rails is MAXIMUM.

Discussion

22.	The coefficient of adhesion is maximum when rails are dusty.(a) True(b) FalseThe question was asked by my college director while I was bunking the class.My doubt is from Nature of Traction Load in portion Traction Drives of Electric Drives
Answer» Right choice is (b) False The explanation: The COEFFICIENT of adhesion is MAXIMUM when rails are dry. The coefficient of adhesion DEPENDS on the nature of the MATERIAL.

Discussion

23.	Calculate the velocity of the bottom point of the wheel for perfect rolling using the data: r=20 cm, ω=100 rad/sec.(a) 20 m/sec(b) 40 m/sec(c) 60 m/sec(d) 80 m/secI have been asked this question in an interview for internship.This interesting question is from Nature of Traction Load in division Traction Drives of Electric Drives
Answer» Correct option is (a) 20 m/sec Explanation: The velocity of the bottom point of the wheel for perfect ROLLING is the product of the RADIUS and ANGULAR velocity. It is expressed in terms of m/sec. V = r×ω = .2×100=20 m/sec.

Discussion

24.	Which one of the following is the correct relationship?(a) F=μR(b) F=4μR(c) F=3μR(d) F=2μRThe question was posed to me in a job interview.The above asked question is from Nature of Traction Load topic in division Traction Drives of Electric Drives
Answer» Correct CHOICE is (a) F=μR To explain: The value of the friction FORCE is the PRODUCT of the COEFFICIENT of friction and NORMAL reaction. The correct value is F=μR.

Discussion

25.	Calculate the coefficient of friction if the angle of inclination is 60°.(a) 2.73(b) 1.73(c) 2.48(d) 1.41This question was addressed to me during an interview.Asked question is from Nature of Traction Load topic in portion Traction Drives of Electric Drives
Answer» RIGHT ANSWER is (b) 1.73 To ELABORATE: The coefficient of friction is the tangent of the ANGLE of the inclined plane. The value of μ is the TAN(60°)=1.73. The coefficient of friction depends on the nature of the surface.

Discussion

26.	The frictional force always acts in the _________ direction of motion of the body.(a) Opposite(b) Same(c) Perpendicular(d) VerticalI have been asked this question in examination.This interesting question is from Nature of Traction Load in section Traction Drives of Electric Drives
Answer» Correct ANSWER is (a) OPPOSITE The best I can explain: The friction of FORCE ALWAYS acts in the opposite direction of the MOTION of the body. It is a non-conservative force. It helps in the motion of the body.

Discussion

27.	If the friction force value is doubled, calculate the new value of the coefficient of friction.(a) 4 times of the original value(b) 2 times of the original value(c) 7 times of the original value(d) Remains the sameThis question was posed to me in an international level competition.I'm obligated to ask this question of Nature of Traction Load topic in chapter Traction Drives of Electric Drives
Answer» RIGHT choice is (d) REMAINS the same Explanation: The value of the coefficient of FRICTION will not change if the friction FORCE is doubled. It only DEPENDS upon the nature of the surface.

Discussion

28.	Calculate the value of the coefficient of friction using the data: F=24 N, Normal force=12 N.(a) 2(b) 4(c) 8(d) 9The question was asked in an interview for internship.This interesting question is from Nature of Traction Load topic in chapter Traction Drives of Electric Drives
Answer» Right option is (a) 2 The best I can EXPLAIN: Coefficient of friction is the RATIO of the friction FORCE and normal force. It is dependent on the smoothness of the SURFACE area. μ=24÷12=2.

Discussion

29.	There are four types of friction.(a) True(b) FalseI had been asked this question in my homework.I need to ask this question from Nature of Traction Load in portion Traction Drives of Electric Drives
Answer» Right answer is (B) False Best explanation: There are two TYPES of FRICTION. Internal and external friction are types of friction. Coefficient of friction is independent of the FORCE of friction.

Discussion

30.	Calculate the minimum time period for ASCI using the data: R=1 kΩ, C=1 μF.(a) 4 msec(b) 8 msec(c) 5 msec(d) 3 msecThe question was posed to me in class test.I'd like to ask this question from Electric Traction Services topic in portion Traction Drives of Electric Drives
Answer» Right CHOICE is (a) 4 msec The explanation: The minimum time PERIOD for ASCI is a 4×R×C = 4×1×1×.001 = 4 msec. The TOTAL time is the sum of CHARGING and discharging time.

Discussion

31.	Which motor is used in the Electric train?(a) DC shunt motor(b) DC series motor(c) Synchronous motor(d) Stepper motorThis question was addressed to me by my school teacher while I was bunking the class.I would like to ask this question from Electric Traction Services topic in section Traction Drives of Electric Drives
Answer» Right option is (b) DC series motor For explanation I WOULD say: DC series motor is used in ELECTRIC train. They provide a high STARTING TORQUE. DC series motor is a UNIVERSAL motor that can run on DC as well as on AC.

Discussion

32.	How much fuel does a train use per Km?(a) 7.85 L/Km(b) 7.97 L/Km(c) 6.59 L/Km(d) 7.15 L/KmThis question was posed to me in unit test.My doubt stems from Electric Traction Services topic in chapter Traction Drives of Electric Drives
Answer» Correct CHOICE is (B) 7.97 L/Km Explanation: The average FUEL CONSUMED by a TRAIN is 7.97 L/Km. Consumption is the same for passenger and cargo trains.

Discussion

33.	Fuel used in the train is ___________(a) Diesel(b) Kerosene(c) Petrol(d) IceThis question was posed to me by my college professor while I was bunking the class.This key question is from Electric Traction Services in section Traction Drives of Electric Drives
Answer» Correct answer is (a) Diesel Easiest explanation: FUEL used in the train is Diesel. Diesel fuel in TRAINS provides more efficiency and more ECONOMY. It is more economical than air travel.

Discussion

34.	Full form of PMMC is ____________(a) Permanent Magnet Moving Coil(b) Premature Magnet Moving Coil(c) Permanent Magnet Motion Coil(d) Peterson Magnet Motion CoilThe question was asked during an internship interview.The above asked question is from Electric Traction Services topic in section Traction Drives of Electric Drives
Answer» Correct option is (a) Permanent MAGNET Moving Coil Easiest EXPLANATION: Full FORM of PMMC is Permanent Magnet Moving Coil. It measures the average value of the applied input signal.

Discussion

35.	Calculate the value measured by Moving Iron when a sinusoidal voltage signal V(t)=20sin(ωt) is applied to it.(a) 14.14 V(b) 20.15 V(c) 16.18 V(d) 22.18 VThe question was posed to me in quiz.Enquiry is from Electric Traction Services in portion Traction Drives of Electric Drives
Answer» The CORRECT choice is (a) 14.14 V To explain: Moving iron instrument MEASURES the r.m.s value of the INPUT SIGNAL. The r.m.s value of the sinusoidal signal is 20÷√2=14.14 V.

Discussion

36.	Calculate the value measured by PMMC when a sinusoidal voltage signal is applied to it.(a) 15 V(b) 0 V(c) 16 V(d) 18 VI had been asked this question by my college director while I was bunking the class.The origin of the question is Electric Traction Services topic in section Traction Drives of Electric Drives
Answer» Right option is (b) 0 V The best I can explain: PMMC instrument MEASURES the average of the input signal. The SINUSOIDAL voltage signal is symmetric about the origin. The average value MEASURED by PMMC is zero.

Discussion

37.	The supply conductor in electric trains is also known as ____________(a) Contact Wire(b) Contact Distance(c) Contact Direction(d) Supply WireThis question was addressed to me during an online interview.This intriguing question comes from Electric Traction Services in chapter Traction Drives of Electric Drives
Answer» The CORRECT choice is (a) Contact Wire The best explanation: The SUPPLY conductor in ELECTRIC trains is also known as Contact wire. Driving MOTOR and power modulators are housed in the locomotive.

Discussion

38.	Who built the first bullet train?(a) Hideo Rampa(b) Hideo Shima(c) Hideo Carry(d) Hideo StokesThis question was posed to me by my college professor while I was bunking the class.My question is based upon Electric Traction Services topic in division Traction Drives of Electric Drives
Answer» The correct choice is (B) Hideo Shima Best explanation: Hideo Shima built the FIRST BULLET TRAIN. He was a Japenese engineer. He was born in 1901 and died in 1998. He was the man behind the concept of a bullet train.

Discussion

39.	Who built the first train?(a) Richardson(b) Rampa(c) Richard Trevithick(d) John CarryThe question was asked in class test.I need to ask this question from Electric Traction Services in chapter Traction Drives of Electric Drives
Answer» The correct ANSWER is (c) Richard Trevithick Explanation: Richard Trevithick built the first train in 1804. It was a steam LOCOMOTIVE train that used to carry 10 tonnes of iron from one place to another.

Discussion

40.	Who is known as the Father of Indian Railways?(a) Lord Dalhousie(b) Lord Ripon(c) Lord Boult(d) Lord HeroThe question was posed to me in an international level competition.This intriguing question originated from Electric Traction Services topic in portion Traction Drives of Electric Drives
Answer» CORRECT choice is (a) Lord DALHOUSIE The explanation: Lord Dalhousie is known as the father of the Indian RAILWAYS. The FIRST railway line connecting Bombay with Thane was laid in 1853.

Discussion

41.	Full form of EMU is ____________(a) Electronics Multiple Unit(b) Electrical Multiple Unit(c) Electrical Multiple Usage(d) Electrical Multiple UserThis question was addressed to me in an interview for internship.This interesting question is from Electric Traction Services in portion Traction Drives of Electric Drives
Answer» Correct CHOICE is (b) Electrical MULTIPLE UNIT The explanation: Full form of EMU is Electrical Multiple Unit. The trains having motor coaches and trailer coaches are known as EMU trains. They provide flexibility.

Discussion

42.	There are typically three types of pantograph.(a) True(b) FalseThe question was posed to me in an interview.Query is from Electric Traction Services topic in section Traction Drives of Electric Drives
Answer» RIGHT option is (a) True The best EXPLANATION: Open frame, faiveley, CROSSED arm are typically three types of the pantograph. The function of the pantograph is to maintain PRESSURE and prevent vertical vibrations.

Discussion

43.	Electric trains are of two types.(a) True(b) FalseI have been asked this question in an online quiz.This question is from Electric Traction Services in division Traction Drives of Electric Drives
Answer» RIGHT choice is (a) True The BEST explanation: Mainline trains and suburban trains are the two types of trains. They run on FIXED rails. They are powered by electricity.

Discussion

44.	The shape of pantograph collector is _________________(a) Square(b) Pentagon(c) Circle(d) HexagonThe question was posed to me in homework.The query is from Electric Traction Services in chapter Traction Drives of Electric Drives
Answer» Correct option is (b) Pentagon To elaborate: The SHAPE of the pantograph collector is a pentagon. It has a conducting STRIP which is PRESSED against contact wire with the help of SPRINGS.

Discussion

Explore topic-wise InterviewSolutions in .

Calculate the value of impedance using the data: R=2 Ω, XL=4 Ω.(a) 5.5 Ω(b) 5.4 Ω(c) 2.5 Ω(d) 4.4 ΩI got this question in quiz.Question is taken from Traction Drives topic in division Traction Drives of Electric Drives

Calculate the apparent power using the data: P=3 W, Q=4 VAR.(a) 5 VA(b) 6 VA(c) 9 VA(d) 2 VAThis question was addressed to me in an internship interview.The doubt is from Traction Drives topic in division Traction Drives of Electric Drives

Calculate the active power in 56 μF capacitor if the VRF value is 5.1%.(a) 6 W(b) 0 W(c) 9 W(d) 2 WThis question was addressed to me during an internship interview.This intriguing question comes from Traction Drives topic in division Traction Drives of Electric Drives

Calculate the power factor using the data: P=15 W, S=25 VA.(a) 0.5(b) 0.9(c) 0.4(d) 0.6This question was posed to me by my school principal while I was bunking the class.I'm obligated to ask this question of Traction Drives topic in chapter Traction Drives of Electric Drives

Calculate the active power in 14 μH inductors if the THD value is 58.1%.(a) 5 W(b) 9 W(c) 4 W(d) 0 WThis question was posed to me during an interview.My question comes from Traction Drives in division Traction Drives of Electric Drives

If induction motor rotor power is 26 KW and gross developed power is 21 KW, then rotor ohmic loss will be _________ KW.(a) 5(b) 6(c) 7(d) 8I had been asked this question during a job interview.The doubt is from Traction Drives in chapter Traction Drives of Electric Drives

Skin effect increases at higher frequencies.(a) True(b) FalseI have been asked this question during an online interview.This intriguing question originated from Traction Drives in section Traction Drives of Electric Drives

Which is the most severe type of fault?(a) LL(b) LLG(c) LLL(d) LLLGI had been asked this question by my school teacher while I was bunking the class.My question comes from Traction Drives topic in chapter Traction Drives of Electric Drives

SVC is used to maintain the power factor above __________(a) .2(b) .5(c) .8(d) .6I had been asked this question in an online quiz.The query is from Traction Drives in division Traction Drives of Electric Drives

The circuit which operates signals is called as ___________(a) Track circuit(b) Fellow circuit(c) Ground circuit(d) Unit circuitThis question was addressed to me in an interview.I need to ask this question from Traction Drives in portion Traction Drives of Electric Drives

Full form of SVC is ___________(a) Static Var Compensator(b) Static Variable Counter(c) State Value Counter(d) Static Value CompensatorI had been asked this question in homework.Question is from Traction Drives in portion Traction Drives of Electric Drives

The value of area under force-time graph is _________(a) Reaction(b) Change in momentum(c) Force(d) TorqueI had been asked this question during an interview.Query is from Nature of Traction Load topic in portion Traction Drives of Electric Drives

The value of area under acceleration-time graph is _________(a) Velocity(b) Displacement(c) Force(d) ImpulseThe question was posed to me in an interview for job.This key question is from Nature of Traction Load in chapter Traction Drives of Electric Drives

The value of area under a velocity-time graph is _________(a) Acceleration(b) Displacement(c) Force(d) MomentumThis question was addressed to me in final exam.My question is taken from Nature of Traction Load in section Traction Drives of Electric Drives

Calculate the value measured by Moving Iron when a sinusoidal voltage signal V(t) = √2sin(3ωt) is applied to it.(a) 2 V(b) 1 V(c) 3 V(d) 4 VThis question was posed to me in an online quiz.My query is from Nature of Traction Load in chapter Traction Drives of Electric Drives

The coefficient of adhesion is maximum when rails are dusty.(a) True(b) FalseThe question was asked by my college director while I was bunking the class.My doubt is from Nature of Traction Load in portion Traction Drives of Electric Drives

Which one of the following is the correct relationship?(a) F=μR(b) F=4μR(c) F=3μR(d) F=2μRThe question was posed to me in a job interview.The above asked question is from Nature of Traction Load topic in division Traction Drives of Electric Drives

Calculate the coefficient of friction if the angle of inclination is 60°.(a) 2.73(b) 1.73(c) 2.48(d) 1.41This question was addressed to me during an interview.Asked question is from Nature of Traction Load topic in portion Traction Drives of Electric Drives

The frictional force always acts in the _________ direction of motion of the body.(a) Opposite(b) Same(c) Perpendicular(d) VerticalI have been asked this question in examination.This interesting question is from Nature of Traction Load in section Traction Drives of Electric Drives

Calculate the value of the coefficient of friction using the data: F=24 N, Normal force=12 N.(a) 2(b) 4(c) 8(d) 9The question was asked in an interview for internship.This interesting question is from Nature of Traction Load topic in chapter Traction Drives of Electric Drives

There are four types of friction.(a) True(b) FalseI had been asked this question in my homework.I need to ask this question from Nature of Traction Load in portion Traction Drives of Electric Drives

Calculate the minimum time period for ASCI using the data: R=1 kΩ, C=1 μF.(a) 4 msec(b) 8 msec(c) 5 msec(d) 3 msecThe question was posed to me in class test.I'd like to ask this question from Electric Traction Services topic in portion Traction Drives of Electric Drives

How much fuel does a train use per Km?(a) 7.85 L/Km(b) 7.97 L/Km(c) 6.59 L/Km(d) 7.15 L/KmThis question was posed to me in unit test.My doubt stems from Electric Traction Services topic in chapter Traction Drives of Electric Drives

Fuel used in the train is ___________(a) Diesel(b) Kerosene(c) Petrol(d) IceThis question was posed to me by my college professor while I was bunking the class.This key question is from Electric Traction Services in section Traction Drives of Electric Drives

Calculate the value measured by Moving Iron when a sinusoidal voltage signal V(t)=20sin(ωt) is applied to it.(a) 14.14 V(b) 20.15 V(c) 16.18 V(d) 22.18 VThe question was posed to me in quiz.Enquiry is from Electric Traction Services in portion Traction Drives of Electric Drives

Who built the first bullet train?(a) Hideo Rampa(b) Hideo Shima(c) Hideo Carry(d) Hideo StokesThis question was posed to me by my college professor while I was bunking the class.My question is based upon Electric Traction Services topic in division Traction Drives of Electric Drives

Who built the first train?(a) Richardson(b) Rampa(c) Richard Trevithick(d) John CarryThe question was asked in class test.I need to ask this question from Electric Traction Services in chapter Traction Drives of Electric Drives

Who is known as the Father of Indian Railways?(a) Lord Dalhousie(b) Lord Ripon(c) Lord Boult(d) Lord HeroThe question was posed to me in an international level competition.This intriguing question originated from Electric Traction Services topic in portion Traction Drives of Electric Drives

There are typically three types of pantograph.(a) True(b) FalseThe question was posed to me in an interview.Query is from Electric Traction Services topic in section Traction Drives of Electric Drives

Electric trains are of two types.(a) True(b) FalseI have been asked this question in an online quiz.This question is from Electric Traction Services in division Traction Drives of Electric Drives

The shape of pantograph collector is _________________(a) Square(b) Pentagon(c) Circle(d) HexagonThe question was posed to me in homework.The query is from Electric Traction Services in chapter Traction Drives of Electric Drives