Measurement and Instrumentation A galvanometer has Eddy current damping Air friction damping Spring coil damping Fluid friction damping Eddy current damping Air friction damping Spring coil damping Fluid friction damping 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 1 mA. 4 mA. 2 mA. 3 mA. 1 mA. 4 mA. 2 mA. 3 mA. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The ratio of change in output to the change in the input is called resolution sensitivity precision repeatability resolution sensitivity precision repeatability ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For a circuit given that I = 2 ± 5 % A, R = 100 ± 0.2 % Ω the limiting error in the power dissipation I2 R in the resistor R is 10.2% 1.2% 5.2% 25.2% 10.2% 1.2% 5.2% 25.2% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The resistance can be measured most accurately by Multimeter Voltmeter-ammeter method Megger Bridge method Multimeter Voltmeter-ammeter method Megger Bridge method 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 0.65 0.84 0.73 1 0.65 0.84 0.73 ANSWER DOWNLOAD EXAMIANS APP
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