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 = 3R2. R1 = 2R2. R1 = R2. R1 = R2/2. R1 = 3R2. R1 = 2R2. R1 = R2. R1 = R2/2. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of following is not correct? An electronic voltmeter draw appreciable current from the source. Voltmeter should have very high resistance. An ammeter should have a very low resitance. A shunt should have a very low resistance. An electronic voltmeter draw appreciable current from the source. Voltmeter should have very high resistance. An ammeter should have a very low resitance. A shunt should have a very low resistance. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A galvanometer has Fluid friction damping Air friction damping Eddy current damping Spring coil damping Fluid friction damping Air friction damping Eddy current damping Spring coil damping ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A Manganin swap resistance is connected in series with a moving coil ammeter consisting of a milli ammeter and a suitable shunt in order to Minimize the effect of temperature variation. Reduce the size of the meter. Minimize the effect of stray magnetic fields. Obtaine large deflecting torque. Minimize the effect of temperature variation. Reduce the size of the meter. Minimize the effect of stray magnetic fields. Obtaine large deflecting torque. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving iron instrument can be used for DC only None of the listed here AC only Both DC& AC DC only None of the listed here AC only Both DC& AC ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A 150 V moving iron voltmeter of accuracy class 1-0 reads 75 V when used in a circuit under standard condition. The maximum possible percentage error in the reading is 1% 2.5% 2% 1.5% 1% 2.5% 2% 1.5% ANSWER DOWNLOAD EXAMIANS APP
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