Technical Test SSC JE: Electrical Engineering (EE)- 6 - Electrical Engineering (EE) MCQ

A 100 W, 200 V filament lamp has operating temperature of 2000ºC. The filament material has resistance temperature coefficient of 0.005 at OºC per ºC. The current taken by the lamp at the instant of switching with 200 V supply with filament temperature of 20ºC will be

Which one of the following has the least value of form factor?

Power factor of the magnetising component of a transformer is

When a 100 mA alternating current with a frequency of 1 kHz flows in the primary of two coupled coils, the secondary voltage is 1V. The mutual inductance between the coils is

A coil with 1000 turns carrying a current of 8A produces a flux of 6×10^–6 Wb. The inductance of the coil would be

A shunt generator produces 450A at 230 V. The resistance of shunt field and armature are 50W and 0.025W respectively. The armature voltage drop will be

A 4-pole dynamo with wave wound armature has 51 slots containing 20 conductors. The voltage induced is 357 V and the speed is 8500 rpm. The flux per pole will be

Series reactors are installed at strategic locations of power system to

The inductance is introduced in the cables in the form of

Load saturation characteristics of a dc generator gives relation between

Equalizer rings are required in lap winding dc machine

According to the fuse law, the current carrying capacity varies as

In electrodynamometer, ammeter, the deflection of the pointer is proportional to

In which of the following transformers, is the secondary winding always kept closed ?

Which of the following transducer requires a high input impedance preamplifier for proper measurements ?

The shape of the curve between the flux density and ampere turns/m is correctly represented by which of the following figures ?

Which loss in a dc generator significantly varies with the load current ?

The ratio of starting torque to fully load torque is least in case of

A rheostat differs from potentiometer in the respect that

The equivalent resistance at the points X₁ and X₂ in the circuit shown below

With the sole purpose of an alternating current is to produce heat, the selection of conductor is based on

In case of delta connected circuit, when one resistor is open, power will be

Permitivity is expressed in terms of

The transition region in an open circuited p-n junction contains

In an unbiased p-n junction, zero current implies that

A null type of instruments as compared to a deflection type instrument has

Accelerated again is done on coils for standard resistors in order to