Measurement and Instrumentation The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be 252 V. 260 V. 248 V. 250 V. 252 V. 260 V. 248 V. 250 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation When using ohmmeter, applied voltage is to be disconnected from the circuit because None of these Current will decrease resistance The ohmmeter has its own internal battery Voltage source will increase resistance None of these Current will decrease resistance The ohmmeter has its own internal battery Voltage source will increase resistance ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be 0.67 A. 0.70 A. 0.25 A. 0.50 A. 0.67 A. 0.70 A. 0.25 A. 0.50 A. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A spring controlled indicating instrument has a deflection of 90deg for maximum current I. The corresponding deflection for a gravity controlled instrument is 120° 30° 90° 0° 120° 30° 90° 0° ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation When the pointer of an indicating instrument comes to rest in the final deflected position, ______ None of the listed here Only deflecting torque acts Only controlling torque acts Both deflecting and controlling torques act None of the listed here Only deflecting torque acts Only controlling torque acts Both deflecting and controlling torques act ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A megger is usually Electro-static type instrument Moving iron type instrument Moving coil type instrument Hot-wire type instrument Electro-static type instrument Moving iron type instrument Moving coil type instrument Hot-wire type instrument ANSWER DOWNLOAD EXAMIANS APP
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