Category: Measurement and Instrumentation

A. elastic galvanometer
B. vibration galvanometer
C. Duddlb galvanometer
D. spot ballistic galvanometer

A. almost zero
B. low
C. high
D. none of the above

A. electrostatic instrument
B. thermocouple instrument
C. moving iron instrument
D. electrodynamic instrument

A. one current circuit and two pressure circuits
B. one current circuit and one pressure circuit
C. two current circuits and one pres¬sure circuit
D. none of the above

A. the bridge can always be balanced
B. the bridge cannot be balanced
C. the bridge can be balanced if the resistances have some specific values

A. ground fault on a cable
B. short circuit fault on a cable
C. both the ground fault and the short-circuit fault
D. none of the above

A. temperature error
B. wave shape error
C. frequency error
D. all of the above

A. (n – 1) wattmeter elements
B. n wattmeter elements
C. (n + 1) wattmeter elements
D. 2n wattmeter elements

A. to the supply side of the current coil
B. to the load side of the current coil
C. in any of the two meters at connection
D. none of the above

A. measurement of resistance
B. measurement of current
C. calibration of ammeter
D. calibration of voltmeter
E. all of the above