Electrical and Electronic Measurement and Instrumentation Objective Questions - Set 07 - ObjectiveBooks

# 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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