List of top Electrical Engineering Questions asked in OJEE

In the measurement of power consumed by a three-phase balanced inductive load using two-wattmeter method, one of the wattmeters \( W_2 \) shows zero reading. The load power factor is
The gravity controlled instrument has crowded scale because current is proportional to
To avoid the cripping error in the energy meters, the discs must
Active materials of a lead acid cell are
In a lead acid cell, hydrogen is liberated at
The impedance of a coil connected across a single-phase AC source is \( 3 + j4 \) ohms. If another capacitive load with an impedance of \( 3 - j4 \) ohms is connected in parallel with this coil, the overall impedance seen by the AC source will be
The reactive power demanded by a circuit element will be zero when the phase difference between the current passing through it and the voltage across it becomes equal to
The overall power factor of a series R-L-C (R = resistance, L = inductance and C = capacitance) circuit with a resistance of 100 ohms, inductive reactance of 273.2 ohms and capacitive reactance of 100 ohms will be
The capacitive reactance offered by a capacitance of 10 microfarads to an alternating current of \( i = I_m \sin(100\pi t - \frac{\pi}{6}) \) amperes is
During charging, the electrolyte of a lead acid battery becomes