Power

Question 1

What components make up a fuse cartridge?

Answer 1

End caps
Fuse wire
Transparent casing

Question 2

What makes up a HRC Fuse Link

Answer 2

Fuse wire
Quarts powder
Casing

Question 3

What makes up the power triangle

Answer 3

Power (P = I x V)
Current (I = P / V)
Voltage (V = P / I)

Question 4

What is the unit of electrical power

Answer 4

Watts (W)

Question 5

How many watts is in one horsepower

Answer 5

746W

Question 6

How does a HRC Fuse work

Answer 6

When an HRC fuse blows, the quarts powder melts and fills the gap between the two ends of the fuse wire. Quarts is an insulator, so now no arc is possible

Question 7

Why is all electrical equipment earthed to the bull of the ship?

Answer 7

For safety to prevent a possible lethal electric shock

Question 8

Three things can cause an earth fault in a circuit?

Answer 8

Dampness

Brittle or hard insulation caused by heat or age

Accidental damage

Question 9

What is the electrical potential of the sea?

Answer 9

0 volts

Question 10

What is the two types of fuse?

Answer 10

Cartridge fuse

High rapturing capacity fuse (HRC Fuse)

Question 11

Which path does electricity take?

Answer 11

The path of least resistance

Question 12

Electrical power depends on:

Answer 12

Number of electron to be moved

Rate at which they are made to travel