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Practice Test: Question Set - 09
1. In an Anderson bridge, the unknown inductance is measured in terms of
- (A) Known inductance and resistance
- (B) Known capacitance and resistance
- (C) Known resistance
- (D) Known inductance
2. The resistance in the circuit of the moving coil of a dynamometer wattmeter should be
- (A) Almost zero
- (B) Low
- (C) High
- (D) None of the above
3. Which of the following devices may be used for extending the range of instruments?
- (A) Shunts
- (B) Multipliers
- (C) Current transformers
- (D) All of the above
4. Which of the following essential features is possessed by an indicating instrument?
- (A) Deflecting device
- (B) Controlling device
- (C) Damping device
- (D) All of the above
5. In a Meggar controlling torque is provided by
- (A) Spring
- (B) Gravity
- (C) Coil
- (D) Eddy current
6. The ratio of maximum displacement deviation to full scale deviation of the instrument is called
- (A) Static sensitivity
- (B) Dynamic deviation
- (C) Linearity
- (D) Precision or accuracy
7. Various adjustments in an energy meter include
- (A) Light load or friction
- (B) Lag and creep
- (C) Overload and voltage compensation
- (D) All of the above
8. E.m.f. of a Weston cell is accurately measured by
- (A) Electrostatic voltmeter
- (B) Hot wire voltmeter
- (C) Isothermal voltmeter
- (D) Electrodynamic voltmeter
9. An ammeter is a
- (A) Secondary instrument
- (B) Absolute instrument
- (C) Recording instrument
- (D) Integrating instrument
10. The stator of phase shifting transformer for use in conjunction with an A.C. potentiometer usually has a
- (A) Single-phase winding
- (B) Two-phase winding
- (C) Three-phase winding
- (D) Any of the above
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