Measurement and Instrumentation In a megger controlling torque is provided by Eddy current Spring Gravity Coil Eddy current Spring Gravity Coil ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The expected value of the voltage across a resistor is 80 V, and the measured value is 79 V. What is the percentage error and relative accuracy of the measurement ? 1.5% & 98.75% 1.25% & 98.75% 1.25% & 98.25% 1.5% & 99% 1.5% & 98.75% 1.25% & 98.75% 1.25% & 98.25% 1.5% & 99% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Attraction and repulsion type instruments are the two different types of which instrument ? Moving iron type. Induction type. Dynamo-meter type. Multipliers. Moving iron type. Induction type. Dynamo-meter type. Multipliers. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Piezoelectronic accelerometer Should be used for high frequencies above 100 Hz. Should use a monitoring source at low input impedance. Should be used for low frequency. Has a low natural frequency. Should be used for high frequencies above 100 Hz. Should use a monitoring source at low input impedance. Should be used for low frequency. Has a low natural frequency. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation One single phase wattmeter operating on 230V and 5A for 5 hours makes 1940 revolutions. Meter constant in revolutions is 400. What is the power factor of the land? 1 0.84 0.65 0.73 1 0.84 0.65 0.73 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Kelvin’s double bridge is used to measure low resistance because effect of contact and lead resistance is eliminated. resistance variation due to temperature. there is no thermo electric emf. it has high sensitivity. effect of contact and lead resistance is eliminated. resistance variation due to temperature. there is no thermo electric emf. it has high sensitivity. ANSWER DOWNLOAD EXAMIANS APP
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