The Rectifier Voltmeter MCQ’s

Electronic Devices & Circuits Electronics & Communication Engineering

This set of Electronic Devices & Circuits Multiple Choice Questions & Answers (MCQs) focuses on “The Rectifier Voltmeter”.

1. AC voltmeter consists of_________
a) half wave rectifier
b) full wave rectifier
c) center tap rectifier
d) bridge wave rectifier

2. In reverse bias, rectifier behaves as a___________
a) Resistor
b) Capacitor
c) Inductor
d) Amplifier

3. _________ diodes are preferred in AC rectifier voltmeter arrangements.
a) Silicon
b) Germanium
c) Gallium
d) Arsenide

4. In a general rectifier voltmeter, the meter has low sensitivity because of ___________ of the diode.
a) low forward resistance
b) high forward resistance
c) low reverse impedance
d) high reverse impedance

5. The resistance of an ideal voltmeter is __________
a) low
b) infinite
c) zero
d) high

6. In electronic voltmeter, the range of input voltages can be extended by using _______
a) Functional switch
b) Input attenuator
c) Rectifier
d) Balanced bridge dc amplifier

7. Which of the following instruments cannot be applied for ac measurements?
a) Hot wire
c) Electrostatic
d) Induction type

8. Electronic voltmeters can be designed to measure ____________
a) Only very small voltages
b) Only very high voltages
c) Both very small and very high voltages
d) Neither high nor small voltages

9. The scale of a voltmeter is uniform. Its type is _________
a) Moving Iron
b) Induction
c) Moving coil permanent magnet
d) Moving coil dynamometer

10. Which of the instruments is most accurate?
b) Moving iron
c) Thermo couple
d) Induction type

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