Measurement and Instrumentation Electrostatic instruments are used as Both ammeter and voltmeter Voltmeters only Ammeters only Wattmeter only Both ammeter and voltmeter Voltmeters only Ammeters only Wattmeter only 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 Both give the same readings One of the wattmeter connections will have to be reversed Pressure coil of the wattmeter will become ineffective. One of the wattmeters will read zero Both give the same readings One of the wattmeter connections will have to be reversed Pressure coil of the wattmeter will become ineffective. One of the wattmeters will read zero ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is postioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is 100 Nm. 1 Nm. 2 Nm. 200 Nm. 100 Nm. 1 Nm. 2 Nm. 200 Nm. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Resistance of a VARISTOR varies with Current Both Voltage and Temperature Temperature Voltage Current Both Voltage and Temperature Temperature Voltage ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The thermocouple instruments do not have Independence of ambient temperature High degree of measuring accuracy Absence of frequency error High sensitivity Independence of ambient temperature High degree of measuring accuracy Absence of frequency error High sensitivity ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation Consider the following statement - 1. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. 2. The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the voltage coil circuit. 1 is true but 2 is false. Both 1 and 2 are true. Both 1 and 2 are false. 1 is false but 2 is true. 1 is true but 2 is false. Both 1 and 2 are true. Both 1 and 2 are false. 1 is false but 2 is true. ANSWER DOWNLOAD EXAMIANS APP
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