Measurement And Instrumentation - Study Mode
[#146] A Q-meter is supplied with an oscillator having a 500 mV output voltage. While testing an unknown inductor, the voltage across the variable capacitor of the Q-meter, measured by a digital voltmeter, is obtained as 10 V. The Q-factor of the inductor is
Correct Answer
(C) 20
[#147] The following type of instrument can be used for measuring AC voltage of the highest frequency with reasonable accuracy.
Correct Answer
(C) Thermal-thermoelectric
[#148] PMMC ammeter have uniform scale because
Correct Answer
(D) Both spring controlled and having deflecting torque varies directly as current
[#149] Heating effect of current is used in
Correct Answer
(C) both ammeters and voltmeters
[#150] Optical pyrometer is generally used to measure:
Correct Answer
(C) High temperature