Measurement and Instrumentation Multiple Choice Questions - Set 04 - ObjectiveBooks

Measurement and Instrumentation Multiple Choice Questions - Set 04

Practice Test: Question Set - 04

1. The power factor of a single phase load can be calculated if the instruments available are
    (A) One voltmeter and one ammeter
    (B) One voltmeter, one ammeter and one wattmeter
    (C) One voltmeter, one ammeter and one energy meter
    (D) Any of the above

2. In a single phase power factor meter the phase difference between the currents in the two pressure coils is
    (A) Exactly 0°
    (B) Approximately 0°
    (C) Exactly 90°
    (D) Approximately 90°

3. For measurements on high voltage capacitors, the suitable bridge is
    (A) Wien bridge
    (B) Modified De Santy's bridge
    (C) Schering Bridge
    (D) Any of the above

4. To measure a resistance with the help of a potentiometer it is
    (A) Necessary to standardize the potentiometer
    (B) Not necessary to standardize the potentiometer
    (C) Necessary to use a volt ratio box in conjunction with the potentiometer
    (D) None of the above

5. The operating voltage of a Meggar is about
    (A) 6 V
    (B) 12 V
    (C) 40 V
    (D) 100 V

6. An ohmmeter is a
    (A) Moving iron instrument
    (B) Moving coil instrument
    (C) Dynamometer instrument
    (D) None of the above

7. A dynamometer wattmeter can be used for
    (A) Both D.C. and A.C.
    (B) D.C. only
    (C) A.C. only
    (D) Any of the above

8. The disc of an instrument using eddy current damping should be of
    (A) Conducting and magnetic material
    (B) Non-conducting and magnetic material
    (C) Conducting and nonmagnetic material
    (D) None of the above

9. The use of ________ instruments is merely confined within laboratories as standardizing instruments.
    (A) Absolute
    (B) Indicating
    (C) Recording
    (D) Integrating

10. An instrument transformer is used to extend the range of
    (A) Induction instrument
    (B) Electrostatic instrument
    (C) Moving coil instrument
    (D) Any of the above

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