Short Circuit and Overloading

Q.

The possibility of overloading occurs when___.

1. a single appliance is connected in a single socket

2. a small amount of current passes through the appliance

3. there are appliances connected to different sockets at a time

4. large number of appliances are connected in a single socket

Q. Difference between overloading and short circuiting in domestic circuit.

Q.

If a device is being operated at a voltage lower than its rated voltage what happens to the power consumed by the device and its internal resistance.

1. Power consumption increases and resistance decreases

2. power consumption and internal resistance remains constant

3. Power consumption increases as internal resistance increases

4. power consumption decreases and internal resistance remains constant

Q. Short circuit occurs when the earth wire and the neutral wire get in contact with each other.

1. False
2. True

Q. What exactly a short circuit means? Choose the correct alternative from the following.

1. The positive and negative terminals of a battery come in contact without the presence of a resistance in between.
2. The positive and earth terminals of a battery come in contact with the presence of a resistance in between.
3. Live and neutral wires from the mains come in contact with each other without the presence of a resistance in between.
4. The positive and earth terminals of a battery come in contact in the presence of a resistance between them.

Q.

Give one word for: the wire that carries 0 V current in a socket.

Q. In which of the following cases, the fuse operates to break the circuit?

1. Underloading
2. Overloading
3. Short circuit
4. (b) and (c) above.

Q.

At the time of short circuit, the current in the circuit

1. Reduces substantially

2. Does not change

3. Increases heavily

4. Varies continuously

Q.

Define the overloading.

Q.

Select the most appropriate option:

Statement 1: During a short circuit, two wires come in contact without the presence of resistance in between and a large amount of current flows through the circuit.

Statement 2: In case of overloading many devices are connected to the same circuit and hence a low current flows through the circuit.

1. Both statements are true

2. Statement 1 is true and Statement 2 is false

3. Statement 1 is false and Statement 2 is true

4. Both statements are false