Aux 1 Unit 14 Q2

1 / 10

In what type of applications are cartridge type fuses commonly used?

D) In circuits that require frequent resetting

C) Only in high-voltage circuits

A) Only in low-voltage circuits

B) In a wide range of applications, including household appliances, industrial machinery, and automotive systems, due to their reliability and safety

2 / 10

What is the primary advantage of using a cartridge type fuse over a traditional fuse with a glass envelope?

D) The cartridge type fuse allows the circuit to continue operating even after blowing.

A) The cartridge type fuse can handle higher voltage and current ratings due to its robust construction and better arc containment.

C) The cartridge type fuse is more expensive.

B) The cartridge type fuse is reusable.

3 / 10

What is a cartridge type fuse primarily composed of?

B) A cylindrical ceramic or glass tube containing a metal wire or strip that melts when excessive current flows through it

A) A flexible plastic casing

D) A rubber enclosure with metal spikes

C) A metal casing with a reset button

4 / 10

Why is a cartridge type fuse typically enclosed in a ceramic or glass tube?

D) To allow the fuse to be reused multiple times

C) To increase the circuit's resistance

B) To provide insulation and containment of the arc and molten metal when the fuse operates, enhancing safety

A) To reduce the cost of the fuse

5 / 10

What characteristic is important for a fuse used in a motor circuit that is less critical in a lighting circuit?

C) Ability to operate at low voltages

B) Delayed or time-delay (slow-blow) characteristic to handle inrush currents without blowing

D) The fuse must be invisible

A) Fast-acting response to small current fluctuations

6 / 10

What happens to a cartridge type fuse after it has operated (blown)?

A) It can be reset and used again

C) It automatically resets after a short period

B) It must be replaced, as it is a single-use protective device

D) It continues to conduct electricity even after blowing

7 / 10

What is the function of the metal end caps on a cartridge type fuse?

B) To facilitate easy installation and ensure a secure electrical connection within the fuse holder

A) To provide decoration

D) To act as additional conductors

C) To increase the fuse's resistance

8 / 10

How does a cartridge type fuse protect an electrical circuit?

C) By increasing the circuit's voltage

D) By lowering the circuit's resistance

B) By interrupting the circuit when the internal metal wire or strip melts due to excessive current, thereby preventing damage to the circuit

A) By resetting itself automatically after a fault

9 / 10

Why might a standard fast-acting fuse be more suitable for a lighting circuit compared to a motor circuit?

C) Lighting circuits have relatively stable and lower current demands, so a fast-acting fuse provides effective protection without the need for delay.

D) Lighting circuits do not require fuses.

B) Lighting circuits operate at higher voltages.

A) Lighting circuits have high inrush currents.

10 / 10

Why does a fuse used in a motor circuit generally have a higher current rating than one used in a lighting circuit?

D) Motor circuits do not require fuses.

A) Motors typically draw higher currents, especially during startup, and the fuse must be capable of handling these surges without blowing.

B) Motors always operate at lower currents.

C) Lighting circuits require less protection.

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