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 1.5 V 1 V 2 V 0.5 V 1.5 V 1 V 2 V 0.5 V ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A metal strain gauge has a gauge factor of two. Its nominal resistance is 120 ohms. If it undergoes a strain of 10-5, the value of change of resistance in response to the strain is 0.0024 Ohm. 240 Ohm. 120 Ohm. 0.0012 Ohm. 0.0024 Ohm. 240 Ohm. 120 Ohm. 0.0012 Ohm. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The form factor in AC is the ratio of Peak value to average value Rms value to peak value Peak value to rms value Rms value to average value Peak value to average value Rms value to peak value Peak value to rms value Rms value to average value ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read - 597 W. - 795 W. + 795 W. + 597 W. - 597 W. - 795 W. + 795 W. + 597 W. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Electrostatic instruments are used as Both ammeter and voltmeter Ammeters only Voltmeters only Wattmeter only Both ammeter and voltmeter Ammeters only Voltmeters only Wattmeter only ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The pressure coil of a wattmeter should be connected on the supply side of the current coil when Supply voltage is low Load impedance is high Load impedance is low None of these Supply voltage is low Load impedance is high Load impedance is low None of these ANSWER DOWNLOAD EXAMIANS APP
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