Measurement and Instrumentation The dynamometer principle can be used for ammeter only. ammeter, voltmeter and wattmeter. wattmeter only. voltmeter only. ammeter only. ammeter, voltmeter and wattmeter. wattmeter only. voltmeter only. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Assertion(A): A low power factor wattmeter has special constructional features to ensure accurate measurment. Reason(R): Extension of wattmeter range in DC circuit can be easily done by using current and potential transformer A is true R is false. Both A and R is true and R is not correct explanation of A. Both A and R is true and R is correct explanation of A C. A is false R is true. A is true R is false. Both A and R is true and R is not correct explanation of A. Both A and R is true and R is correct explanation of A C. A is false R is true. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The effect of stray magnetic fields on the actuating torque of a portable instrument is maximum when the operating field of the instrument and stray fields are perpendicular. inclined at 30o. parallel. inclined at 60o. perpendicular. inclined at 30o. parallel. inclined at 60o. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In a ballistic galvanometer, the deflecting torque is proportional to The current through coil Square of current through coil Square-root of current through coil Sine of measured The current through coil Square of current through coil Square-root of current through coil Sine of measured ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A DC potentiometer is designed to measure up to about 2V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balances at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of test cell is 1.34 V. 1.5 V. 1 V. 1.7 V. 1.34 V. 1.5 V. 1 V. 1.7 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A thermometer having first order dynamics is subjected to a sudden temperature change of 30oc to 150oc. If it has he time constant of 5 sec, what temperature will be indicated by after 5 sec? 105.6o. 30o. 63.25o. 150o. 105.6o. 30o. 63.25o. 150o. ANSWER DOWNLOAD EXAMIANS APP
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