Measurement and Instrumentation Which of following are needed both for protection and metering? Energy meter. Instrument transformer. Wattmeters. Power factor meters. Energy meter. Instrument transformer. Wattmeters. Power factor meters. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Electrostatic instruments are normally used for Low current measurements High voltage measurements High current measurements Low voltage measurements Low current measurements High voltage measurements High current measurements Low voltage measurements ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In measurement system, the function of the signal manipulating elements is to change the quantity under measurement to an analogues signal. to perform non liner operation like clipping filtering, chopping and clamping. to perform linear operation like addition and multiplication. change the magnitude of the input signal while retaining its identity. change the quantity under measurement to an analogues signal. to perform non liner operation like clipping filtering, chopping and clamping. to perform linear operation like addition and multiplication. change the magnitude of the input signal while retaining its identity. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The function of shunt in an ammeter is to Increase the resistance of ammeter Increase the sensitivity of the ammeter None of the listed here By pass the current Increase the resistance of ammeter Increase the sensitivity of the ammeter None of the listed here By pass the current ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The two pressure coils of a single phase power factor meter have The same number of turns but different dimensions None of these The same dimension but different number of turns The same dimensions and the same number of turns The same number of turns but different dimensions None of these The same dimension but different number of turns The same dimensions and the same number of turns 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 7.5 V, 2 ms. 10 V, 1 ms. 5 V, 1 ms. 5 V, 2 ms. 7.5 V, 2 ms. 10 V, 1 ms. 5 V, 1 ms. 5 V, 2 ms. ANSWER DOWNLOAD EXAMIANS APP
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