Measurement and Instrumentation Resistances can be measured with the help of Wattmeters Ammeters Voltmeters Ohmmeters and resistance bridges Wattmeters Ammeters Voltmeters Ohmmeters and resistance bridges ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The problem of Electrostatic coupling in a transformer is acute at High load on the transformer Low frequencies High frequencies Power frequencies High load on the transformer Low frequencies High frequencies Power frequencies ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The quantity 1/√(∈0 × μ0) in SI units has the speed of light. both ‘a’ and ‘b’. dimension LT-1. none of these. speed of light. both ‘a’ and ‘b’. dimension LT-1. none of these. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Which of the following instruments can be used to measure AC current only? Moving iron ammeter Moving iron voltmeter Permanent Magnet Type ammeter Induction type ammeter Moving iron ammeter Moving iron voltmeter Permanent Magnet Type ammeter Induction type ammeter ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be 0 W. 50 W. 100 W. 25 W. 0 W. 50 W. 100 W. 25 W. 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 5 V, 2 ms. 7.5 V, 2 ms. 5 V, 1 ms. 10 V, 1 ms. 5 V, 2 ms. 7.5 V, 2 ms. 5 V, 1 ms. 10 V, 1 ms. ANSWER DOWNLOAD EXAMIANS APP
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