Electrical Engineering Quiz

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Electrical Engineering

Electrical Engineering Quiz

1 / 25

A 2 transistor class B power amplifier is commonly called ______________________ amplifier:-

Dual

Push pull

Symmetrical

2 / 25

For transmission of power over a distance of 200 km , the transmission voltage should be:-

132 kv

66 kv

33 kv

3 / 25

Which statement is not correct? A lead accumulator of 20 ampere hour can supply:-

20 A of current for 1 hours

1A of current for 20 hours

20 A of current for 20 hours

4 / 25

Temperature coefficient of resistance is expressed in terms of:-

mhos/ohm'C

mhos/'C

Ohm/Ohm C

5 / 25

If Q of an LC circuit increases , then bandwidth;-

Increase

Remain constant

Decrease

6 / 25

A resonant circuit contains __________ elements;-

R and C

R and L

L and C

7 / 25

The maximum length of a screw conveyor is about:-

40 meters

30 meters

60 meters

8 / 25

The electro chemical reaction are not reversible in case of:-

Both a, b

Primary cells

Secondary cells

9 / 25

The current flowing between electrode inside a lead acid battery is:-

Ionization current

Polarization current

electron current

Proton current

10 / 25

Induction type single phase energy meters measures electric energy in:-

kWh

11 / 25

The starting torque of a squirrel cage induction motor is:-

None of them

Low

Negligible

12 / 25

By which method string efficiency can be improved:-

Using a guard ring

Grading the insulator

Any of them

13 / 25

The conductors have transport phenomena of electrons due to:-

Electromagnetic field

Magnetic field

Electric field

14 / 25

A floating battery is one which supplies current intermittently:-

Yes

15 / 25

One kilowatt hour is equal to:-

860 k cal

735 k cal

532 k cal

16 / 25

Power is measured in three phase load by using an ammeter:-

False

True

17 / 25

In a series RLC circuits , the wave front and wave times are controlled by changing the value:-

R only

R and C simultaneously

R and L simultaneously

18 / 25

Non linearity caused by servomotor is due to;-

Dead space

Coulomb friction

Saturation

19 / 25

The electrical power to a meggar is provided by:-

Battery

AC generator

Permanent magnet DC generator

20 / 25

The dielectric strength of a transformer oil is expected to be:-

100KV

IKV

33 KV

21 / 25

In equipment filled with liquid dielectric heat is transferred mainly by:-

Conduction

Radiation

Convection

22 / 25

Which meter is used a null detector in wheatstone bridge :-

Ammeter

Galvanometer

Voltmeter

23 / 25

To protect the meter against high voltage in case the series resistance fails, the suitable protective device is:-

all of them

Neon glow tube

Paper gap

24 / 25

Which one will have the highest anode current density:-

Cadmium plating

Silver plating

Zinc plating

25 / 25

The conduction of electricity in semiconductor , take place due to movement of:-

Both

Negative ion

Electron and holes

Positive ion

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