Measurement and Instrumentation The quantity 1/√(∈0 × μ0) in SI units has the speed of light. both ‘a’ and ‘b’. none of these. dimension LT-1. speed of light. both ‘a’ and ‘b’. none of these. dimension LT-1. 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 60o. inclined at 30o. parallel. perpendicular. inclined at 60o. inclined at 30o. parallel. 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 V. 1.5 V. 1.7 V. 1.34 V. 1 V. 1.5 V. 1.7 V. 1.34 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation If two 300V full scale voltmeters V1 and V2 having sensitivities of 100 kOhm/V and 150 kOhm/V are connected in series to measure 500V then V1 = 300V and V2 = 200V. V1 = 0V and V2 = 0V. V1 = 200V and V2 = 300V. V1 = 250V and V2 = 250V. V1 = 300V and V2 = 200V. V1 = 0V and V2 = 0V. V1 = 200V and V2 = 300V. V1 = 250V and V2 = 250V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving coil permanent magnet instrument can be used as ______ by using a low resistance shunt. Voltmeter Ballastic galvanometer Ammeter Flux meter Voltmeter Ballastic galvanometer Ammeter Flux meter 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? 0.84 0.73 1 0.65 0.84 0.73 1 0.65 ANSWER DOWNLOAD EXAMIANS APP
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