Measurement and Instrumentation A wheatstone bridge cannot be used for precision measurements because errors are introduced into on account of Thermoelectric emfs. All of above. Resistance of connecting leads. Contact resistance. Thermoelectric emfs. All of above. Resistance of connecting leads. Contact resistance. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A 0 - 200 V voltmeter has a guaranteed accuracy of 1% of full scale reading. The voltage measured by this instrument is 50 V. What is the limiting error? 3% 5% 2% 4% 3% 5% 2% 4% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The time/div and voltage axes of an oscilloscope have been creased. A student connects a 1 KHz, 5 V P-P square wave calibrition pulse to channel-1 of the scope and observes the screen to be as shown in the upper trace of figure. An unknown signal is connected to channel-2 (lower trace) of the scope. If the time/div and V/div on both channels are the same, the amplitude (P-P) and period of the unknown signal are respectively 10 V, 1 ms. 5 V, 2 ms. 5 V, 1 ms. 7.5 V, 2 ms. 10 V, 1 ms. 5 V, 2 ms. 5 V, 1 ms. 7.5 V, 2 ms. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The effect of stray magnetic fields on the actuating torque of a portable instrument is maximum when the operating field of the instrument and stray fields are inclined at 60o. perpendicular. inclined at 30o. parallel. inclined at 60o. perpendicular. inclined at 30o. parallel. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation An instrument to be used for measurement and control should preferably have A highly damped response Linear output and fast response Dead zone and dead time Non-linear output A highly damped response Linear output and fast response Dead zone and dead time Non-linear output ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The transfer instrument which is used for standardization of a polar type AC potentiometer is an electrostatic instrument. a moving coil instrument. a dynamometer instrument. a thermal instrument. an electrostatic instrument. a moving coil instrument. a dynamometer instrument. a thermal instrument. ANSWER DOWNLOAD EXAMIANS APP
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