Measurement and Instrumentation Electrostatic instruments are used as Voltmeters only Both ammeter and voltmeter Ammeters only Wattmeter only Voltmeters only Both ammeter and voltmeter Ammeters only Wattmeter only ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is 3 mA. 2 mA. 1 mA. 4 mA. 3 mA. 2 mA. 1 mA. 4 mA. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A resistance of 105 ohms is specified using significant figures as indicated below : 1. 105 ohms 2. 105.0 ohms 3. 0.000105 mega ohms Among these, 2 and 3 represent greater precision than 1. 2 represents greater precision but 1 and 3 represent same precision. 1, 2 and 3 represent same precision. 1 represents greater precision than 2 and 3. 2 and 3 represent greater precision than 1. 2 represents greater precision but 1 and 3 represent same precision. 1, 2 and 3 represent same precision. 1 represents greater precision than 2 and 3. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In a moving iron meter, the deflecting torque is proportional to Current through the coil Square of the current through the coil Sine of the measurand Squareroot of the measurand Current through the coil Square of the current through the coil Sine of the measurand Squareroot of the measurand ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A current of is measured with a thermocouple, 5 A full scale meter. What is the meter reading? 2.03 A. 5 A. 6.09 A. 4.06 A. 2.03 A. 5 A. 6.09 A. 4.06 A. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Why is a MISC meter not recommended for DC measurement? The error is high due to eddy current effect The meter is calibrated for AC and it’s error for DC would be high The error is high due to hysteresis effect The meter does not respond to DC signals The error is high due to eddy current effect The meter is calibrated for AC and it’s error for DC would be high The error is high due to hysteresis effect The meter does not respond to DC signals ANSWER DOWNLOAD EXAMIANS APP
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