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. R1 = 2R2. R1 = 3R2. R1 = R2/2. R1 = R2. R1 = 2R2. R1 = 3R2. R1 = R2/2. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In AC circuits, the connection of measuring instruments cause loading effect errors which may effect only the magnitude of the quantity being measured. both of above. magnitude, phase and waveform of the quantity being measured. only phase of the quantity being measured. only the magnitude of the quantity being measured. both of above. magnitude, phase and waveform of the quantity being measured. only phase of the quantity being measured. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A voltmeter has 100 scale divisions and can measure up to 100 V. Each division can be read to ½ division. The resolution of the voltmeter is 2 V 1.5 V 0.5 V 1 V 2 V 1.5 V 0.5 V 1 V ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving coil ammeter has a uniform scale with 50 division and gives a full scale reading 10 A. The instrument can read up to (1/5)th of a scale division with a fair degree of certainty. What is the resolution of the instrument in mA? 40 mA. 25 mA. 80 mA. 50 mA. 40 mA. 25 mA. 80 mA. 50 mA. 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 0.84 0.73 0.65 1 0.84 0.73 0.65 ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A potentiometer may be used for All of the listed here Measurement of current Measurrment of resistance Calibration of ammeter All of the listed here Measurement of current Measurrment of resistance Calibration of ammeter ANSWER DOWNLOAD EXAMIANS APP
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