Electronics MCQs

Option A: The light emitting diodes

Option B: Photo diodes

Option C: Photo voltaic cell

Option D: Solar cells.

Correct Answer: Photo diodes ✔

Option A: An analogue waveform

Option B: Continuous wave form

Option C: Electronic waveform

Option D: A digital waveform

Correct Answer: A digital waveform ✔

Option A: D.C.

Option B: A.C.

Option C: Both A.C. & D.C.

Option D: None of the above

Correct Answer: A.C. ✔

Option A: n-carriers only

Option B: p-carriers only

Option C: p-carriers and n-carriers respectively

Option D: n-carriers and p-carriers respectively

Correct Answer: p-carriers and n-carriers respectively ✔

Option A: Logic gates

Option B: Boolean algebra

Option C: Amplifier gain

Option D: Logic functions

Correct Answer: Logic gates ✔

Option A: Increases

Option B: Decreases

Option C: Remains same

Option D: No effect

Correct Answer: Decreases ✔

Option A: Equal to D.C. value

Option B: More than D.C. value

Option C: Less than D.C. value

Option D: Zero

Correct Answer: B. More than D.C. value ✔

Option A: 2

Option B: 3

Option C: 4

Option D: 5

Correct Answer: 3 ✔

Option A: Step up transformer

Option B: Step down transformer

Option C: Three diodes in common

Option D: Triode vacuum tube

Correct Answer: Triode vacuum tube ✔

Option A: Non-inverting voltage at output

Option B: Reference voltage on the other

Option C: Virtual input

Option D: Output

Correct Answer: Reference voltage on the other ✔

Option A: A very high input impedance

Option B: A very low input impedance

Option C: A low output impedance

Option D: None of the above

Correct Answer: A very high input impedance ✔

Option A: That the emitter be heated

Option B: That the base be heated

Option C: That the collector be heated

Option D: None of the above

Correct Answer: None of the above ✔

Option A: 2

Option B: 3

Option C: 4

Option D: 5

Correct Answer: 5 ✔

Option A: A high gain amplifier

Option B: A high-power amplifier

Option C: A high resistance amplifier

Option D: A low resistance amplifier

Correct Answer: A high gain amplifier ✔

Option A: A digital waveform

Option B: An analogue waveform

Option C: Discrete waveform

Option D: None at all

Correct Answer: An analogue waveform ✔

Option A: The light emitting diodes

Option B: Photo diodes

Option C: Photo voltaic cell

Option D: Solar cells.

Correct Answer: Photo diodes ✔

Option A: Converter

Option B: A rectifier

Option C: Inverter

Option D: Oscillator

Correct Answer: Inverter ✔

Option A: The negative half cycle of A.C.

Option B: The positive half cycle of A.C.

Option C: The positive and negative half cycles

Option D: Either positive or negative half of A.C.

Correct Answer: The positive half cycle of A.C. ✔

Option A: The positive half cycle of input A.C.

Option B: The negative half cycle of input A.C.

Option C: The complete cycle of input A.C.

Option D: All of the above.

Correct Answer: C. The complete cycle of input A.C. ✔

Option A: is located on the emitter

Option B: is located on the base

Option C: is locate on the collector

Option D: points form north to south

Correct Answer: is located on the emitter ✔

Option A: antimony

Option B: phosphorus

Option C: aluminium

Option D: arsenic

Correct Answer: aluminium ✔

Option A: minority carriers

Option B: majority carriers

Option C: holes

Option D: electron

Correct Answer: majority carriers ✔

Option A: 105 ohm metre

Option B: 106 ohm metre

Option C: 107 ohm metre

Option D: 108 ohm metre

Correct Answer: 108 ohm metre ✔

Option A: Conduction band

Option B: Fermi band

Option C: Valence band

Option D: Forbidden band

Correct Answer: Conduction band ✔

Option A: during the manufacturing process

Option B: under forward bias

Option C: under reverse bias

Option D: when temperature varies

Correct Answer: during the manufacturing process ✔

Option A: using a transistor

Option B: suppressing the harmonics in A.C voltage

Option C: suppressing half wave of A.C supply by using diode

Option D: using a Coolidge tube

Correct Answer: suppressing half wave of A.C supply by using diode ✔

Option A: equal to emitter current

Option B: slightly less than emitter current

Option C: greater than emitter current

Option D: any of above

Correct Answer: slightly less than emitter current ✔

Option A: n

Option B: p

Option C: mix

Option D: any of above

Correct Answer: n ✔

Option A: The switch

Option B: The light emitting diode

Option C: The photo diodes

Option D: Solar cells.

Correct Answer: The light emitting diode ✔

Option A: An amplifier.

Option B: A rectifier

Option C: Filtering circuit

Option D: Converter.

Correct Answer: A rectifier ✔

Option A: It has low resistance to the current flow when forward biased & high resistance when reverse biased.

Option B: It has low resistance to the current flow when forward biased.

Option C: It has high resistance to the current flow when reverse biased

Option D: Its conductivity increases with rise of temperature.

Correct Answer: It has low resistance to the current flow when forward biased & high resistance when reverse biased. ✔

Option A: is located on the emitter

Option B: is located on the base

Option C: is locate on the collector

Option D: points form north to south

Correct Answer: is located on the emitter ✔

Option A: protons

Option B: positrons

Option C: electrons

Option D: photons

Correct Answer: electrons ✔

Option A: insulator

Option B: conductor

Option C: semi conductor

Option D: any of above

Correct Answer: insulator ✔

Option A: constant

Option B: zero

Option C: changing

Option D: infinite

Correct Answer: changing ✔

Option A: holes in n-type and free electrons in p-type

Option B: holes in n-type and p-type

Option C: free electrons in n-type and holes in p-type

Option D: free electrons in n-type and p-type

Correct Answer: holes in n-type and free electrons in p-type ✔

Option A: collector

Option B: emitter

Option C: base

Option D: any of above

Correct Answer: base ✔

Option A: capacitor

Option B: inductor

Option C: on switch

Option D: off switch

Correct Answer: off switch ✔

Option A: pentavalent

Option B: trivalent

Option C: divalent

Option D: tetravalent

Correct Answer: tetravalent ✔

Option A: majority carriers

Option B: minority carriers

Option C: dual carriers

Option D: blockers

Correct Answer: minority carriers ✔