For measurement of radio frequency A.C. signal ________ type meter is used.
1). Thermocouple
2). Electrostatic
3). Electrodynamometer
4). Rectifier
The error of an instrument is normally given as a percentage of
1). measured value
2). full-scale value
3). mean value
4). rms value
Lissajous patterns are used to measure
1). Voltage and frequency
2). Frequency and Phase shift
3). Frequency and amplitude distortion
4). Amplitude and flux
Deflecting torque is ________ quantity under measurement in PMMC instruments.
1). Directly proportional
2). Inversely proportional
3). Directly proportional to square of
4). Inversely proportional to square of
A multirange instrument has
1). multiple shunt or series resistances inside the meter
2). multi coil arrangement
3). variable turns of coil
4). multi range meters inside the measurement system