Measurement and Instrumentation The use of __________________ instruments is merely confined within laboratories as standardizing instrument. absolute. indicating. recording. integrating. absolute. indicating. recording. integrating. 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? 0.73 1 0.65 0.84 0.73 1 0.65 0.84 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The repeat accuracy of an instrument can be judged from its Linearity error Static error Standard deviation of error Dynamic error Linearity error Static error Standard deviation of error Dynamic error ANSWER DOWNLOAD EXAMIANS APP
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 260 V. 248 V. 250 V. 252 V. 260 V. 248 V. 250 V. 252 V. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Why is a MISC meter not recommended for DC measurement? The meter does not respond to DC signals The meter is calibrated for AC and it’s error for DC would be high The error is high due to hysteresis effect The error is high due to eddy current effect The meter does not respond to DC signals The meter is calibrated for AC and it’s error for DC would be high The error is high due to hysteresis effect The error is high due to eddy current effect ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation ______ instruments are most sensitive. Moving iron Hot wire Dynamometer Permanent magnet moving coil Moving iron Hot wire Dynamometer Permanent magnet moving coil ANSWER DOWNLOAD EXAMIANS APP
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