Sources and Detectors MCQ’s

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This set of Electrical Measurements Multiple Choice Questions & Answers (MCQs) focuses on “Sources and Detectors”.

1. At high frequencies in an AC bridge, the source is _______
a) tuned amplifiers
b) oscillators
c) vibration galvanometer
d) high voltage source

2. The frequency range of a typical oscillator is _______
a) 1 Hz to 50 Hz
b) 1 kHz to 100 KHz
c) 40 Hz to 125 kHz
d) 1 MHz to 150 MHz

3. At very low frequencies in a AC bridge, the source is _________
a) power line
b) e.m.f
c) galvanometer
d) tuned circuit

4. The power output for a typical oscillator is _______
a) 1 kW
b) 1 MW
c) 1 mW
d) 7 W

5. The output frequency of an oscillator is _______
a) unstable and fixed
b) stable and adjustable
c) stable and fixed
d) unstable and variable

6. Tuned amplifiers can be set to _______
a) low frequencies
b) high frequencies
c) any frequency
d) audio frequencies

7. The output waveform in an oscillator is _______
a) sinusoidal
b) cosinusoidal
c) tangential
d) logarithmic

8. The output power of an oscillator is not enough to drive power circuits.
a) True
b) False

9. Tuned amplifier circuits respond to broad bandwidth at bridge frequency.
a) True
b) False

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