Basics Of Electrical Engineering MCQ Practice Quiz 2

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Created on July 18, 2021

Basics Of Electrical Engineering Practice Quiz 2

1 / 25

The filament of an electric bulb is made of __?

Carbon

Tungsten

Aluminium

Nickel

2 / 25

Which quantity should be measured by the voltmeter ?

Current

Voltage

Power

Speed

3 / 25

In a series circuit with unequal resistances __ ?

The highest resistance has the most of the current through it.

The lowest resistance has the highest voltage drop.

The lowest resistance has the highest current.

The highest resistance has the highest voltage drop.

4 / 25

The minimum charge on an ion___?

Equal to the atomic number of the atom.

Equal to the charge of the number of electrons in an atom.

Equal to the charge of an electron.

Zero

5 / 25

The rating of a fuse wire is always expressed in__?

Ampere-hours

KWH

Ampere-volts

Amperes

6 / 25

Insulating materials have the function of___?

Preventing a short circuit between conducting wires

Preventing an open circuit between the voltage source and the load

Conducting very large currents

Storing very high currents

7 / 25

Varistors are__?

Insulators

Non-linear resistors

Carbon resistors

Resistors with zero temperature coefficient

8 / 25

Which one of the following does not have negative temperature co-efficient?

Aluminium

Paper

Rubber

Mica

9 / 25

Resistance having rating 10 ohms, 10 W is likely to be a__?

Atelic resistor

Carbon resistor

Wire wound resistor

Variable resistor

10 / 25

All of the following are equivalent to watt except_?

(Amperes) ohm

Joules/sec.

Amperes x volts

Amperes/volt

11 / 25

For which of the following 'ampere second could be the unit ?

Reluctance

Charge

Power

Energy

12 / 25

Which is the best conductor of electricity ?

Iron

Silver

Copper

Carbon

13 / 25

Ohm's law is not applicable to__?

Vacuum tubes

Carbon resistors

High voltage circuits

Circuits with low current densities

14 / 25

Which of the following materials has a negative temperature co-efficient of resistance ?

Copper

Aluminum

Carbon

Brass

15 / 25

Which of the following statement is true both for a series and a parallel D.C. circuit?

Elements have individual currents

Currents are additive

Voltages are additive

Power are additive

16 / 25

Two resistors are said to be connected in series when___?

Same current passes in turn through both

Both carry the same value of current

Total current equals the sum of branch currents

Sum of IR drops equals the applied E.M.F.

17 / 25

You have to replace 1500 Q resistor in radio. You have no 1500 Q resistor but have several 1000 Q ones which you would connect__?

Two in parallel

Two in parallel and one in series

Three in parallel

Three in series

18 / 25

Which of the following material has nearly zero temperature co-efficient of resistance?

Manganin

Carbon

Porcelain

Copper

19 / 25

Current velocity through a copper conductor is__?

The same as propagation velocity of electric energy

Independent of current strength

Of the order of a few ^.s/m

Nearly 3 x 108 m/s

20 / 25

A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is____?

6.4 A, 6.9 A

6.4 A, 9.6 A

4.6 A, 6.9 A

4.6 A, 9.6 A

21 / 25

Four wires of same material, the same cross sectional area and the same length when connected in parallel give a resistance of 25 Q. If the same four wires are connected is series the effective resistance will be__?

100 Ω

200 Ω

300 Ω

400 Ω

22 / 25

The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other?

18 Q

36 Q

48 Q

64 Q

23 / 25

A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is___?

400 Q

800 Q

600 Q

1000 Q

24 / 25

In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is___?