Measurement and Instrumentation The errors introduced by an instrument fall in which category ? Systematic errors Random errors Environmental errors Gross errors Systematic errors Random errors Environmental errors Gross errors ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation For power measurement of three phase circuit by two wattmeter method, when the value of power factor is less than 0.5 lagging One of the wattmeters will read zero Pressure coil of the wattmeter will become ineffective. Both give the same readings One of the wattmeter connections will have to be reversed One of the wattmeters will read zero Pressure coil of the wattmeter will become ineffective. Both give the same readings One of the wattmeter connections will have to be reversed ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation ______ instruments are most sensitive. Dynamometer Moving iron Hot wire Permanent magnet moving coil Dynamometer Moving iron Hot wire Permanent magnet moving coil ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation What is the standard unit for length ? Inch Centimeter Meter Kilometer Inch Centimeter Meter Kilometer ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The resistance of a circuit is found by measuring current flowing and the power fed into the circuit. If the limiting errors in the measurement of power and current are ± 1.5% and ± 1.0% respectively, the limiting error in the measurement of resistance ± 1% ± 3.5% ± 1.5% ± 2.5% ± 1% ± 3.5% ± 1.5% ± 2.5% ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation An induction meter can handle current upto 10 A 30 A 100 A 60 A 10 A 30 A 100 A 60 A ANSWER DOWNLOAD EXAMIANS APP
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