Measurement and Instrumentation No eddy current and hysteresis losses occur in Electrodynamo meter instruments Electrostatic instruments Moving iron instruments PMMC instruments Electrodynamo meter instruments Electrostatic instruments Moving iron instruments PMMC instruments ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The dynamometer principle can be used for ammeter only. wattmeter only. ammeter, voltmeter and wattmeter. voltmeter only. ammeter only. wattmeter only. ammeter, voltmeter and wattmeter. voltmeter only. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The circuit in figure is used to measure the power consumed by the load. The current coil and the voltage coil of the wattmeter have 0.02 Ω and 1000 Ω resistance respectively. The measured power compared to the load power will be 0.4% less. 0.2% more. 0.4 more. 0.2% less. 0.4% less. 0.2% more. 0.4 more. 0.2% less. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The function of shunt in an ammeter is to Increase the resistance of ammeter By pass the current Increase the sensitivity of the ammeter None of the listed here Increase the resistance of ammeter By pass the current Increase the sensitivity of the ammeter None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The given figure shows wein bridge connection for frequency measurement. C and R are variables and gang together. For balanced condition the expression for frequency is f = 1/2πCR when R1 = R2/2. R1 = 3R2. R1 = 2R2. R1 = R2. R1 = R2/2. R1 = 3R2. R1 = 2R2. R1 = R2. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation 0-150 V voltmeter has an accuracy of 1% of full-scale reading. The voltage measured by the instrument is 75 V. The limiting error is 4% 3% 1% 2% 4% 3% 1% 2% ANSWER DOWNLOAD EXAMIANS APP
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