Technical Test SSC JE: Electrical Engineering (EE)- 10 - Electrical Engineering (EE) MCQ

The DC resistance of conductor is less than AC resistance due to

If the height of the transmission tower is increased

On increasing the 'Q' of the coil

When a source is delivering maximum power to a load, the efficiency of the circuit

An RLC resonant circuit has a resonance frequency of 1.5 MHz and bandwidth of 10
KHz. If C = 150 pf, then the effective resistance of the circuit will be

Bimetallic strip is

A single phase full Bridge diode rectifier is supplied from 230V, 50 Hz source. The load consist of R = then average value of output current is

Horizontal hold control in a TV is a

The efficiency of an incandescent lamp is

What is the current through the resistance for the circuit as shown below

In RLC circuit, the current at resonance is

A 3-f star connected balanced load consumes P watts of power from a 400V (line to line voltage) supply. If the same load is connected in delta across the same supply. What is the power consumption

Two resistors of equal value are connected in series across the line B and C of a symmetrical 3-f 400V system. What is the magnitude of the voltage between the line A and the junction of the resistors

If load on a d.c. shunt motor is increased its speed is decreased due primarily to

If the field circuit of a loaded shunt motor is suddenly opened

Which of the following d.c. motor would be suitable for drives requiring high starting torquebut only fairly constant speed such as crushers

Discharging action of points is utilised in

What will happen if an ac series motor is run on a dc supply

The current waveform as shown below is applied to in a pure resistor of 10W. What is the power disipated in the resistor

Which one of the following instruments is commonly used to measure primary current ofa transformer connected to mains

The efficiency of dc generator is maximum when

Magnetic lines of force coming from a magnet

In case of frosted GLS lamps, frosting is done by

In a motor starter, the electro mechanical contactor provides inherent protection against

A good illumination will be, when the light is

For the circuit as shown below, what is the value of I

For a series RLC circuit energized with a sinusoidal voltage source of frequency 4 rad/sthe applied voltage lags the current by an angle of tan^-12 degrees. Then the value of R for L=1Hand C = 0.05F is