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Practice Test: Question Set - 07
1. A direct current can be measured by
- (A) A D.C. potentiometer directly
- (B) A D.C. potentiometer in conjunction with a
standard resistance
- (C) A D.C. potentiometer in conjunction with a
volt ratio box
- (D) None of the above
2. If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is
- (A) 10°
- (B) 80°
- (C) 120°
- (D) 170°
3. Commonly used standard capacitor is
- (A) Spherical type
- (B) Concentric cylindrical type
- (C) Electrostatic type
- (D) Multilayer parallel plate type
4. Most sensitive galvanometer is
- (A) Elastic galvanometer
- (B) Vibration galvanometer
- (C) Duddlb galvanometer
- (D) Spot ballistic galvanometer
5. Which of the following is measured by using a vector voltmeter?
- (A) Amplifier gain and phase shift
- (B) Filler transfer functions
- (C) Complex insertion loss
- (D) All of the above
6. Damping of the Ballistic galvanometer is made small to
- (A) Get first deflection large
- (B) Make the system oscillatory
- (C) Make the system critically damped
- (D) Get minimum overshoot
7. In a vibrating reed frequency meter the natural frequencies of two adjacent reeds have a difference of
- (A) 0.1 Hz
- (B) 0.25 Hz
- (C) 0.5 Hz
- (D) 1.5 Hz
8. Basically a potentiometer is a device for
- (A) Comparing two voltages
- (B) Measuring a current
- (C) Comparing two currents
- (D) Measuring a voltage
9. For measuring current at high frequency we should use
- (A) Moving iron instrument
- (B) Electrostatic instrument
- (C) Thermocouple instrument
- (D) None of the above
10. An induction meter can handle current up to
- (A) 10 A
- (B) 30 A
- (C) 60 A
- (D) 100 A
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