Measurement and Instrumentation What is the expression for momentum? mass × velocity force × displacement mass × acceleration change of velocity / time mass × velocity force × displacement mass × acceleration change of velocity / time ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Electrostatic instruments are used as Both ammeter and voltmeter Wattmeter only Voltmeters only Ammeters only Both ammeter and voltmeter Wattmeter only Voltmeters only Ammeters only ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The internal resistance of an ammeter should be Medium High Very small Infinity Medium High Very small Infinity ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures Active power of Y phase Power proportional to 3 phase power if the load is balanced Reactive power of R phase Active power in R phase Active power of Y phase Power proportional to 3 phase power if the load is balanced Reactive power of R phase Active power in R phase 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 - 795 W. - 597 W. + 795 W. + 597 W. - 795 W. - 597 W. + 795 W. + 597 W. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The spring material used in a spring control device should have the following property. Most be of low temperature co-efficient All of the listed here Should have low specific resistance Should non magnetic Most be of low temperature co-efficient All of the listed here Should have low specific resistance Should non magnetic ANSWER DOWNLOAD EXAMIANS APP
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