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 0.70 A. 0.50 A. 0.67 A. 0.25 A. 0.70 A. 0.50 A. 0.67 A. 0.25 A. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A permanent magnet moving coil ammeter has a coil resistance of 99ohm and Full Scale DeflectionFSD. current of 0.1mA. Shunt resistance is 1 ohm. Current through the meter at 0.5 F.S.D is 0.05mA 0.007mA 0.023mA 0.1mA 0.05mA 0.007mA 0.023mA 0.1mA ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging Both give the same readings One of the wattmeters will read zero Pressure coil of the wattmeter will become ineffective. One of the wattmeter connections will have to be reversed Both give the same readings One of the wattmeters will read zero Pressure coil of the wattmeter will become ineffective. One of the wattmeter connections will have to be reversed ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A thermo couple ammeter gives full scale deflection of 10 A, when it reads one fifth of the scale, the current will be 2 A. 4.47 A. 4 A. 5.78 A. 2 A. 4.47 A. 4 A. 5.78 A. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation When checked with an ohm meter an open resistor reads zero. high but within tolerance. low but not zero. infinite. zero. high but within tolerance. low but not zero. infinite. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is One ohm according to working standards Standard ohm One ohm according to SI units One international ohm One ohm according to working standards Standard ohm One ohm according to SI units One international ohm ANSWER DOWNLOAD EXAMIANS APP
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