InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 9301. |
capacitanceof the4759 find equivalentGiven big |
|
Answer» its wheat stone so neglect 3 1 and2 in series So 1+2 = 3 now 3,3 in parallel 3×3/6 = 9/6 = 3/2 ❤Its 3/2 ❤ |
|
| 9302. |
9. Derive an Expression for equivalent capacitance of two capacitors in series. |
|
Answer» tqs |
|
| 9303. |
9. Find equivalent capacitance between A and B: nal? |
| Answer» | |
| 9304. |
(1) Rajtv Gandhi Khel Ratna Award : |
|
Answer» Ans :- The Rajiv Gandhi Khel Ratna Award is awarded in Sports and Games categories. It is the highest sporting honour of the Republic of India. The award is named after Rajiv Gandhi, former Prime Minister of India who served from 1984 to 1989. It is awarded annually by theMinistry of Youth Affairs and Sports. The recipients are selected by a committee constituted by the Ministry and is honored for their "spectacular and most outstanding performance in the field of sports over a period of four years" at international level. As of 2017, the award comprises a medal, a certificate, and a cash prize of 7.5 lakh. Till Now About 34 players has beenawarded by theRajiv Gandhi Khel Ratna Award. Here we are providing theList of Indian Players from various sports who won Rajiv Gandhi Khel Ratna Awardand made India Proud. |
|
| 9305. |
. At any instant the ratio of the amount of radioactivesubstances is 2 :1. If their half-lives be respectively 12and 16 hours, then after two days, what will be the ratioof the substances? |
| Answer» | |
| 9306. |
Write down the functions of Accumulator. |
|
Answer» Inamodern computers, any register canfunctionas anaccumulator. The most elementary use for anaccumulatoris addingasequence of numbers. The numerical value in theaccumulatorincreases as each number is added, exactly as it happens inasimple desktop calculator (but much faster, of course). |
|
| 9307. |
n numbert 4ょfqentteal ea0canneded ivalent ca pa tance. xaau tar |
| Answer» | |
| 9308. |
At what height from the surface of earth the total energyof a satellite is equal to its potential energy at a height of2R from surface of earth? (R radius of earth |
| Answer» | |
| 9309. |
hich of the following is the symbol for AND operatii) &viHi) &iv) of these. |
|
Answer» the answer is iii)& for and operator |
|
| 9310. |
Light has no mass so it also has noenergy according to Einstein, buthow can sunlight warm the earthwithout energy? |
|
Answer» Light indeed carries energy and accomplishes this without having any mass. The Einstein equation that you are probably referring to is E = mc2. This equation is actually a special case of the more general equation: Light indeed carries energy via its momentum despite having no mass. Public Domain Image, source: Christopher S. Baird.E2 = p2c2 + m2c4 In the above equation, E is the total energy of the particle, p is the momentum of the particle (which is related to its motion), c is the speed of light, and m is the mass of the particle. This equation can be derived from the relativistic definitions of the energy and momentum of a particle. The above equation tells us that the total energy of a particle is a combination of its mass energy and its momentum energy (which is not necessarily related to its mass). When a particle is at rest (p = 0), this general equation reduces down to the familiar E = mc2. In contrast, for a particle with no mass (m = 0), the general equation reduces down to E = pc. Since photons (particles of light) have no mass, they must obey E = pc and therefore get all of their energy from their momentum. |
|
| 9311. |
es- Umesh has two bulbs having resistances of15 Ί and 30 Ί. He wants to connect them in acircuit, but if he connects them one at a timethe filament gets burnt. Answer the following.i. Which method should he use to connect thebulbs? |
|
Answer» Two bulbs joined in parallel would have importantly reduced resistance even if the current has to be divided upon them , consider each one of 15 ohms and a voltage of 30 volts if they were connected in series , total resistance would be 30 ohms and so intensity will be 1 amp and in parallel it would be 7.5 ohms. so which method should be used |
|
| 9312. |
what is magnetic fields |
|
Answer» Magnetic field A magnetic field is a vector field that describes the magnetic influence of electrical currents and magnetized materials. In everyday life, the effects of magnetic fields are often seen in permanent magnets, which pull on magnetic materials and attract or repel other magnets. yes |
|
| 9313. |
A coil of area 80 cm2 and 50 turns is rotating with 2000 revolutions per minute about anaxis perpendicular to a magnetic field of induction 0.05 T. The maximum value of thee.m.f. developed in it is:4.4π10Tb)a) 200T Vc) V |
|
Answer» so answer is c |
|
| 9314. |
List three sources of magnetic fields. |
|
Answer» The magnetic fields can be produced :- 1. by using a permanent magnet. 2.by using a electric current through a straight wire or a circular cool. 3.by using an electromagnet . |
|
| 9315. |
A particle of mass m, charge Q and kinetic energyT enters a transverse uniform magnetic field. ofinduction B. After 3 second the kinetic energy ofthe particle will be (1) 4T(3) 2T(2) 3T(4) T |
|
Answer» hence, correct option is (d) |
|
| 9316. |
What is the difference between magnetic field and magnetic induction?On what factors does the magnetic fields depends? |
|
Answer» Magnetic field: Really just somewhat like what an electric field is, just that this has no positive or negative end. This is caused by movement of charges, opposed to how electric field is produced by a charge regardless of its motion. Magnetic induction: This is a phenomenon. This is a process wherein a changing magnetic flux (that is magnetic field moving through a certain surface area) produces an electric field in the opposite direction. Factors on which the magnetic field depends:(a) current passing through the conductor. (b) distance of the magnetic compass from the conductor. Right Hand Thumb Rule gives the direction of magnetic field. |
|
| 9317. |
0.5 Write the relation between the magnetic induction B and theforce F on pole m. |
|
Answer» I dont know F= qVBsin thetathanks |
|
| 9318. |
12. Name some devices in which electric motors are use |
| Answer» | |
| 9319. |
6.State and explain Faraday's laws of electromagnetic induction.A field of 0-5 T is at right angles to a coil of area 8 x 10 m'with 500 turnsIt is removed from the field in 1/50 secs. Find the emf produced. |
|
Answer» send me agen |
|
| 9320. |
Mention similarities and dissimilarities between magnetic and electrical circuits. |
|
Answer» The Difference Between Magnetic and Electric Circuit are as follows:- The closed path followed by the flux in the Magnetic Circuit, whereas in the Electric Circuit Current follows the closed path. The unit of flux is Weber, and the unit of current is Ampere. Magnetomotive force in the magnetic circuit is the driving force and is measured in Ampere-turns (AT). Electromotive force is the driving force in the electric circuit and is measured in volts (V). Reluctance opposed the flow of magnetic flux S = l/aµ and measured in (AT/wb) and Resistance opposes the flow of current R = ρ. l/a and measured in (Ώ). In the magnetic circuit Permeance = 1/reluctance whereas in the electric circuit Conduction = 1/ resistance. As in the magnetic circuit, there exists Permeability so as Conductivity in the electric circuit. Similarly,Reluctivity in magnetic circuit is known as Resistivity in the electric circuit. In magnetic circuit, molecular poles are aligned. The flux does not flow but sets up in the magnetic circuit. In electric circuit electric current flows in the form of electrons. For magnetic flux, there is no perfect insulator. It can set up even in the non-magnetic materials like air, rubber, glass, etc.For electric circuit, there are a large number of perfect insulators like glass, air, rubber, PVC and synthetic resin which do not allow it to flow through them. The reluctance (S) of a magnetic circuit is not constant rather it varies with the value of B.The resistance (R) of an electric circuit is almost constant as its value depends upon the value of ρ. The value of ρ and R can change slightly if the change in temperature takes place. Once the magnetic flux sets up in a magnetic circuit, no energy is expanded. Only a small amount of energy is required at the initial stage to create flux in the circuit. Energy is expanding continuously, as long as the current flows through the electrical circuit.This energy is dissipated in the form of heat. Kirchhoff flux and MMF law is followed in the magnetic circuit whereas in the electric circuit Kirchhoff voltage and current law is followed. (KVL and KCL). Magnetic lines of flux start from The North Pole and ends at the South Pole. Electric lines or current starts from the positive charge and ends on the negative charge. i need similarities also thanks |
|
| 9321. |
AboutMagneticinduction |
|
Answer» Electromagnetic or magnetic induction is the production of an electromotive force (i.e., voltage) across an electrical conductor in a changing magnetic field. Michael Faraday is generally credited with the discovery of induction in 1831, and James Clerk Maxwell mathematically described it as Faraday's law of induction. |
|
| 9322. |
What is induction motors ? |
|
Answer» Ans :- An induction motor or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor can therefore be made without electrical connections to the rotor. PLEASE LIKE THE ANSWER |
|
| 9323. |
3. What is the electromagnetic Induction? |
|
Answer» Electromagnetic or magnetic induction is the production of an electromotive force across an electrical conductor in a changing magnetic field. Michael Faraday is generally credited with the discovery of induction in 1831, and James Clerk Maxwell mathematically described it as Faraday's law of induction |
|
| 9324. |
a copper bj wood g RCC aj starThe spacing bets phase conductors of a 220kV live isapproximately equal to= 2m b] 3.53 ) bor 1 805 m.remonly used on |
|
Answer» ytydud telephone deutsch yet The spacing between phase conductors of a 220 kV line is approximately equal to 6m (c) is correct option |
|
| 9325. |
2) A volume of 120 ml of drink (half alcohol + half water by mass) originally at atemperature of 25°C is cooled by adding 20gm ice at 0°C. If all the ice melts, findthe final temperature of the drink. (density of drink 0.833gm/cc, specific heat ofalcohol 0.6cal/gm/°C)4°C(3) 3°C(4) 6°C |
|
Answer» A volume of 120 ml of drink (half alcohol + half water by mass) originally at a temperature of 25°c is cooled by adding 20 gm of ice at 0°c. If all the ice melts, find the final temperature of the drink. (Density of drink = 0.833 gm/cc, specific heat of alcohol = 0.6 cal/gm.°c, specific heat of water = 1 cal/gm.°c, specific latent heat of ice = 80 cal/gm).The answer to the given question is 4-degree centigrade. |
|
| 9326. |
11. Three particles A, B and C each of mass m arelying at the corners of an equilateral triangle of sideL. If the particle A is released keeping the particlesB and C fixed, the magnitude of instantaneousacceleration of A ism LmGm2Gm22) N2(3)仮Gm22 |
| Answer» | |
| 9327. |
Write about artificial food colouthe substances used in them andtheir harmful effects.a.rs, |
|
Answer» Food coloring, orcolor additive, is anydye,pigmentor substance that impartscolorwhen it is added tofoodordrink. They come in many forms consisting of liquids,powders,gels, andpastes. Food coloring is used both in commercial food production and in domestic cooking. Food colorants are also used in a variety of non-food applications includingcosmetics,pharmaceuticals, home craft projects, and medical devices. Widespread public belief that artificial food coloring causesADHD-like hyperactivity in children originated fromBenjamin Feingold, a pediatric allergist from California, who proposed in 1973 that salicylates, artificial colors, and artificial flavors cause hyperactivity in children;however, there is no evidence to support broad claims that food coloring causesfood intoleranceandADHD-like behavior in children.It is possible that certain food colorings may act as a trigger in those who are genetically predisposed, but the evidence is weak. |
|
| 9328. |
Three particles A, B and C each of mass m arelying at the corners of an equilateral triangle of sideL. If the particle A is released keeping the particlesB and C fixed, the magnitude of instantaneousacceleration of A isAgmL m |
|
Answer» The gravitational force from Point A to point B: F₁ = G(m)(m)/L² = Gm²/L² The gravitational force from Point A to point C: F₂ = G(m)(m)/L² = Gm²/L² Now we will look at the magnitudes of F₁ and F₂ Let F₁ = F₂ = F Angle is 60° which is between F₁ and F₂ Now we will calculate the net force on the particle A: F base net = √F² + F² + 2(F) (F) cos 60° = √3F² = √3F Now we will calculate the acceleration for the particle A: a = F base net/ m = √3F/m = √3/m (Gm²/L²) = √3Gm/ L² |
|
| 9329. |
18. What are the kepler's Laws that govern themotion of the planets?19. Calculate the average density of earth in term ofg. G and R.20. A cubic block of edge 2 cm and of mass 5 kg iskept on a table top. Calculate |
|
Answer» Kepler'sthreelaws of planetary motioncan be stated as follows: (1) Allplanetsmove about the Sun in elliptical orbits, having the Sun as one of the foci. (2) A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time. |
|
| 9330. |
One gm mol of a diatomic gas (γ 1.4) iscompressed adiabatically so that itstemperature rises from 27°C to 127°C. Thework done will be |
| Answer» | |
| 9331. |
A gramophone disc rotates at 60 rpm. A coin ofmass 18 g is placed at a distance of 8 cm from thecentre. Calculate the centrifugal force on the coin.Take = 9.87.(Ans. 4105.92 dyne) |
| Answer» | |
| 9332. |
Define C, and C. Derive an expression for the ratio of C,/C, for a diatomic gas |
|
Answer» CP is the specific heat at constant pressure. It is the amount of energy released or absorbed by a unit mass of substance with the change in temperature at constant pressure. In other words, it is the energy transferred between a system and its surrounding under constant pressure.. CV is the amount of heat energy that a substance absorbs or releases (per unit mass) with the change in temperature where a volume change does not occur. In other words, it is the heat energy transferred between a system and its surrounding without any change in the volume of the system. Relationship Between CV and CP The following relationship can be given considering the ideal gas behavior of a substance. CP – CV = R Where r is the universal gas constant. The ratio between CP and CV is the specific heat ratio, γ. Γ = CP /CV |
|
| 9333. |
Define Cp and C. Derive an expression for the ratio of Cp/ C for a diatomic gas.Lesson-10 |
| Answer» | |
| 9334. |
7. Calculate the volume of wood of mass 6000 kgif the density of wood is 0-8 g cm-3. |
|
Answer» Density in kg/m3=1000*density in g/cm3 So 0.8g/cm3=800kg/m3 volume =mass/density=6000/800=7.5m3 |
|
| 9335. |
The pressure and density of a diatomic gas(y 7/5) change adiabatically from (P, d) to(Pl, d1). If32, then should be |
| Answer» | |
| 9336. |
15. What will be the terminal velocity of a steel ball16. An iron ball of radius 0.3 cm falling through a columradius 2 mm in glycerine ?Ans. 7 cm sof oil of density 0.94 g cm-3 attains a terminal velociof 0.5 cm sWhat is the coefficient of viscositythe oil ? The density of iron is 7.8 g cm3Ans. 269 po |
| Answer» | |
| 9337. |
S An iron ball of density 7 Sgm/am3 and3 is totally immersed in water. Calculate the weight of iron ball in |
| Answer» | |
| 9338. |
8.An iron ball of density 7.8gm/cm3 and volume200cm3 is totally immersed in water. Calculate the weight of iron ball inair.flosts In the air Frolain this fact with reason? |
|
Answer» Upthrust = Mass x Acceleration due to gravity.Mass = Density x Volume = 7.8 x 200 = 1560g Therefore, Upthrust = 1560 x 9.8 = 15,288 gm/s^2 Volume V = 200cm³ = 200 × 10^–6 m³ and density = 7800kg/m³ Mass of iron ball = 7800 × 200 × 10^–6 = 78 × 2 × 10– 2 kg So, m = 1.56 kg g = 10m/s² Since the density of iron is greater than water. It will sink (1) Weight of iron ball in air = mg = 1.56 × 10 = 15.6 N |
|
| 9339. |
A person connects four 1/4 ohm cells in series but one cellhas its terminals reversed. The external resistance is 1 ohmIf each cell has an e.m.f. of 1.5 V, the current flowing is |
| Answer» | |
| 9340. |
Rajesh has two bulbs connected across two cells in a simple circuit.how can be make it bulb glow dimmer. a)replace one cell with a piece of wire.b) replace one bulb with a piece of wire.c) replace one bulb with another cell. |
|
Answer» replace one cell with a piece of wire will dim the lightas some current will pass through wire as welland voltage is less as well thank u |
|
| 9341. |
DOWOWY19.A person is moving on a bike along a straight line AB. When he just passes Aaccelerates his bike uniformly at 1m/s to reach B. He arrives at B with a speedof 108 kmph after 20s. The length AB isa) 300mb) 400mc) 500md) 700m |
| Answer» | |
| 9342. |
A flux of 1m Wb passes through a strip havingan area A 0.02 m2. The plane of the strip is atan angle of 600 to the direction of a uniformfield B. The value of B is-1. |
|
Answer» 0.1 Tesla would be the answer answer is 0.1 Tesla sorry for the inconvenience |
|
| 9343. |
A flux of 1m Wb passes through a strip havingan area A = 0.02 m2. The plane of the strip is atan angle of 600 to the direction of a uniformfield B. The value of B is(A) 0.1 T(C) 4.0 mT(B) 0.058 T(D) none of the above |
|
Answer» B=fluxxareacosthetaB=1*0.02*1/20.01T |
|
| 9344. |
Gmm2If F = d2 ,then F =P.T.O |
|
Answer» Given masses are m1 and m2.Distance between masses is 3d Therefore,F = Gm1m2/(3d)^2 = Gm1m2/9d^2 thanks |
|
| 9345. |
kills the food spoiling bacteria present in the milk. |
|
Answer» Pasturization kills the food spoiling bacteria. |
|
| 9346. |
2.kills the food spoiling bacteria present in the milk. |
|
Answer» Pasteurisation kills the food spoiling bacteria present in the milk Pasteurization kills the food spoiling bacteria present in milk |
|
| 9347. |
vh Tespect to ice4.The radius of curvature of a convex mirror used on a moving automobile is 2.0 m.A truck is coming behind it at a constant distance of 3.5 m. Calculate(i) the position and(ii) the size of image relative to the size of truck. What will be the nature of image? |
| Answer» | |
| 9348. |
9, Th e logic circuit used to generate the activeA15low chip select (CS) by an 8085 A14microprocessor to address a peripheral is A12shown in figure. The peripheral willrespond to addresses in the range13CS |
|
Answer» It will respond the address in 0 to 15as it will be either AAAA to FFFF bit |
|
| 9349. |
12. A stone is projected at a cliff of height h and 100 m away with an initial speed at 42 ms" directed atan angle 0.= 60" above the horizontal. The stone strikes at A, 5.5 s after launching. Finda) the height h of the cliff.b) the speed of the stone just before impact at A.c) where on the cliff will the stone hit?-- 100 m |
| Answer» | |
| 9350. |
10. La car travels 40 km in 30 minutesand the heat 40 km in 40 minutesCalculate the average speed for theentire journey |
|
Answer» Answer is 68.57 km/ hr 68.57 km/hr is the correct answer The Average speed will be the sum of both the speed divided by 2Speed=Distance/Time so 1st condition Speed = 40km/30min = 1.3332nd condition Speed = 40/40= 1Therefore average speed = 1.333+1 /2 = 1.6665 units 68.57 km/h is the average speed 68.57 km/hr is the correct answer |
|