Related InterviewSolutions

• A transistor series regulator has the following specifications: VIN=15V, VZ=8.3V, β=100, R=1.8KΩ, RL=2KΩ. What will be the Zener current in the regulator circuit?(a) 4.56mA(b) 3.26mA(c) 4.56mA(d) 3.68mAThe question was posed to me in an internship interview.The question is from Voltage Regulation Using Zener Diode topic in division Application of Diodes of Electronic Devices & Circuits
• In a half wave rectifier, the sine wave input is 50sin50t. If the load resistance is of 1K, then average DC power output will be?(a) 3.99V(b) 2.5V(c) 5.97V(d) 6.77VThis question was posed to me during a job interview.Enquiry is from Half-Wave Rectifier in section Application of Diodes of Electronic Devices & Circuits
• The ripple factor (ϒ) of inductor filter is_________(a) ϒ = RZ3/√2ωL(b) ϒ = RZ/3√2ωL(c) ϒ = RZ3√2/ωL(d) ϒ = RZ3/√2ωLI had been asked this question during an interview.Origin of the question is Inductor Filters topic in division Application of Diodes of Electronic Devices & Circuits
• Determine the minimum value of load resistance that can be used in the circuit with (IZ)Min=3mA. The input voltage is 10V and the resistance R is 500Ω. The Zener diode has a VZ=6V 0and (IZ)MAX=90mA.(a) 1KΩ(b) 2.4KΩ(c) 1.2KΩ(d) 3.6KΩI got this question at a job interview.The doubt is from Voltage Regulation Using Zener Diode in portion Application of Diodes of Electronic Devices & Circuits
• The limiting value of the current resistor used in a Zener diode (when used as a regulator)(a) (R)min=[(Vin)max + VZ/R(b) (R)min=[(Vin)max-VZ]/R(c) (R)min=[(Vin)max-VZ]R(d) (R)min=[(Vin)max+ VZ]RI got this question in an interview for job.The origin of the question is Voltage Regulation Using Zener Diode topic in division Application of Diodes of Electronic Devices & Circuits
• The output waveform of CLC filter is superimposed by a waveform referred to as_________(a) Square wave(b) Triangular wave(c) Saw tooth wave(d) Sine waveI had been asked this question in a job interview.This intriguing question comes from CLC Filter in section Application of Diodes of Electronic Devices & Circuits
• What is the relation between time constant and load resistance?(a) They don’t depend on each other(b) They are directly proportional(c) They are inversely proportional(d) Cannot be predictedI got this question at a job interview.This is a very interesting question from CLC Filter topic in portion Application of Diodes of Electronic Devices & Circuits
• A single phase full wave rectifier makes use of pi section filter with 10µF capacitors and a choke of 10henry. The secondary voltage is 280V and the load current is 100mA. Determine the dc output voltage when f=50Hz.(a) 345V(b) 521V(c) 243V(d) 346VI have been asked this question in unit test.Query is from CLC Filter topic in chapter Application of Diodes of Electronic Devices & Circuits
• The advantages of a pi-filter is_________(a) low output voltage(b) low PIV(c) low ripple factor(d) high voltage regulationThis question was addressed to me in exam.My question is based upon CLC Filter in section Application of Diodes of Electronic Devices & Circuits
• The ripple to heavy loads by a capacitor is_______(a) high(b) depends on temperature(c) low(d) no ripple at allThis question was addressed to me in a national level competition.Question is taken from L-Section Filter topic in division Application of Diodes of Electronic Devices & Circuits