Electrical Power and Household Circuits Test

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Electrical Power and Household Circuits Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

A current in a lamp fixed on a wall is rated at 4 A. What should be the best fuse to use in the plug of lamp?

A
3 A fuse

B
0 A fuse

C
4 A fuse

D
5 A fuse
Question 2
1 / -0

What happens to resistance of an appliance if voltage rating is doubled and power rating is four times?

A
The resistance doubles.

B
The resistance becomes four times.

C
The resistance becomes half.

D
The resistance remains the same.
Question 3
1 / -0

Two coils of resistances R1 = 6 Ω and R2 = 10 Ω are connected in series across a battery of potential difference 12 V. Find the total energy supplied by battery in 90 seconds.

A
530 J

B
810 J

C
260 J

D
1000 J
Question 4
1 / -0

In which wire of an appliance should a fuse be connected so that a person may not get a shock?

A
Live wire

B
Neutral wire

C
Earth wire

D
Any of these
Question 5
1 / -0

Which of the following statements is not correct?

A
The switch used to switch on or off the mains is double pole switch.

B
The switch used with an appliance to start or stop the flow of current in it, is single pole switch.

C
A single pole switch disconnects the live wire.

D
A double pole switch connects live and neutral wires.
Question 6
1 / -0

Which of the following statements is not correct for MCB?

A
When short circuit happens they switch off circuit in very short time duration.

B
They cause heavy current to flow in the time.

C
They are not used for individual circuits.

D
They are better than a fuse.
Question 7
1 / -0

Which of the following statements is not correct for high tension wires?

A
It is used for high voltage and heavy current.

B
It has large surface area.

C
It has high resistance.

D
It radiates more heat that is produced.
Question 8
1 / -0

Why the top pin in a three - pin plug is kept thick and big as compared to other two pins?

A
Because connection with neutral wire is made first for safety of user.

B
Because earth wire connection is made first for safety of user.

C
Because connection with the circuit is made first for safety of user.

D
Because live wire connection is made first for safety of user.
Question 9
1 / -0

Which of the following is not an advantage of ring system?

A
In ring system, current can travel to an individual appliance through two separate paths.

B
In ring system, only different sizes of plugs and sockets are used for different current carrying capacities.

C
While installing a new appliance in a room, a new line up to the distribution box is not required.

D
The cost of wiring is reduced considerably.

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Electrical Power and Household Circuits Test - 2

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Electrical Power and Household Circuits Test - 2

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SHARING IS CARING

Question 1

3 A fuse

0 A fuse

4 A fuse

5 A fuse

Question 2

The resistance doubles.

The resistance becomes four times.

The resistance becomes half.

The resistance remains the same.

Question 3

530 J

810 J

260 J

1000 J

Question 4

Live wire

Neutral wire

Earth wire

Any of these

Question 5

The switch used to switch on or off the mains is double pole switch.

The switch used with an appliance to start or stop the flow of current in it, is single pole switch.

A single pole switch disconnects the live wire.

A double pole switch connects live and neutral wires.

Question 6

When short circuit happens they switch off circuit in very short time duration.

They cause heavy current to flow in the time.

They are not used for individual circuits.

They are better than a fuse.

Question 7

It is used for high voltage and heavy current.

It has large surface area.

It has high resistance.

It radiates more heat that is produced.

Question 8

Because connection with neutral wire is made first for safety of user.

Because earth wire connection is made first for safety of user.

Because connection with the circuit is made first for safety of user.

Because live wire connection is made first for safety of user.

Question 9

In ring system, current can travel to an individual appliance through two separate paths.

In ring system, only different sizes of plugs and sockets are used for different current carrying capacities.

While installing a new appliance in a room, a new line up to the distribution box is not required.

The cost of wiring is reduced considerably.

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