Test: Basic Electronics - 5 - Electrical Engineering (EE) MCQ

A heater is rated as 230 V, 10 KW, AC. The value 230 V refers to –

The r.m.s. value of a sine wave is 200 V. Its average value is –

Two waves of the same frequency have opposite phase when the phase angle between them is–

The power consumed in a circuit element will be least when the phase difference between the current and voltage is –

The r.m.s value and mean value is the same in the case of –

For a sine wave with peak value Emax the average value is –when the phase difference between the current and voltage is –

Two sinusoidal currents are given by i₁ = 100 sin (wt + p / 3) and

i₂ = 150 sin (wt + p / 4) The phase difference between them is ......degrees.

The r.m.s value of a half-wave rectified current is 100 A. Its value for full-wave rectification would be.......amperes.

The r.m.s. value of sinusoidal A. C. current is equal to its value at an angle of ... degrees–

Capacitive reactance is more when–

In a series resonant circuit, the impedance of the circuit is –

Inductance affects the direct current flow–

All the rules and laws of D.C. circuit also supply to A.C. circuit containing–

The double energy transient occur in the –

The power factor at resonance in R-L-C parallel circuit is –

In a pure resistive circuit–

Which of the following circuit component opposes the change in the circuit voltage–
 

In a purely inductive circuit–

Power factor of electric bulb is –

The time constant of a series R-C circuit is given by –

If resistance is 20W and inductance is 2 H in a R–L series circuit, then time constant of this circuit will be –

The safest value of current the human body can carry for more than 3 second is –