UP polytechnic Lecturer (EE) Quiz 19

The preferable mounting to operate spring and gravity controlled based instruments is

A PMMC instrument is almost similar to

For the Wheatstone Bridge shown below, current through Galvanometer is ________ μA .

In a Q-meter, distributed capacitance of a coil is measured by changing the capacitance of the tuning capacitor. The values of tuning capacitor are C₁ and C₂ for resonant frequencies f₁ and 2f₁ respectively. The value of distributed capacitance will be

A PMMC instrument can measure

A single-phase, 230 V Induction Watt-hour meter has a meter constant of 300 revolutions per kWh. If the load is drawing a current of 20 A at a power factor of 0.8 lagging, then the speed of disc is:

A MI instrument deflection is

To reduce the temperature error drastically, the swamping resistance is connected in series with working coil, made of

Voltmeter – Ammeter and Ammeter – Voltmeter methods best suitable for

An energy meter makes 100 revolutions of its disc per unit of energy. The number of revolutions made by the disc during one hour when connected across 210V source and drawing a current of 20A at 0.8 p.f. leading is