Electronics MCQ Questions and Answers

11- Which one of the following registers of 8085 microprocessor is NOT a part of programming model ?
(A) Temporary data register
(B) Status register
(C) Memory address register
(D) Instruction register
12- Which diode is a popular microwave oscillator ?
(A) LED
(B) Varactor
(C) Gunn
(D) Zener
13- Zener diode is suitable as a/an
(A) Voltage regulator
(B) filter
(C) amplifier
(D) rectifier
14- As compared to a full wave rectifier, the bridge rectifier has the dominant advantage of
(A) higher efficiency
(B) lower ripple factor
(C) lower peak inverse voltage requirement
(D) higher current carrying capacity
15- Frequency modulated signal ideally requires
(A) constant frequency
(B) constant bandwidth
(C) small bandwidth
(D) infinite bandwidth
16- LVDT is a
(A) Acceleration transducer
(B) Velocity transducer
(C) Displacement transducer
(D) Pressure transducer
17- LED is a
(A) transistor
(B) gate
(C) thermistor
(D) p-n diode
18- Ideal digital filter is always a/an
(A) Linear phase filter
(B) Causal filter
(C) FIR filter
(D) IIR filter
19- Modern day optical fibers have losses of the order of
(A) 100 dB / km
(B) 20 dB / km
(C) 1 dB / km
(D) 10 dB / km
20- Cascading amplifier stages to obtain a high gain is best done with
(A) Combination of common base and common emitter stages
(B) Common collector stages
(C) Common Base stages
(D) Common Emitter stages
ANSWERS:
11-(A), 12-(C), 13-(A), 14-(C), 15-(D), 16-(C), 17-(D), 18-(D), 19-(C), 20-(D)