Power

Question 1

When a force of any kind causes …
Work is said to be …

Answer 1

Motion
Done

Question 2

What 2 things does electrical power depend on?

Answer 2

The number of electrons to be moved

The rate (speed) at which they are made to travel

Question 3

What does P= I x V stand for?

Answer 3

Power = Current x Voltage

Question 4

The electrical unit of power is the …

Answer 4

Watt

Question 5

The mechanical unit of power is …

Answer 5

Horsepower

Question 6

1 horsepower = … …

Answer 6

746 watts

Question 7

A … is a 1000 watts

Answer 7

Kilowatt

Question 8

A … is 1,000,000 watts

Answer 8

Megawatt

Question 9

Name two resistance values

Answer 9

Cold resistance ( no voltage applied)
Hot resistance (voltage applied

Question 10

Resistors are rated in … and …

Answer 10

Watts
OHM’s

Question 11

A widely used fuse is the … fuse

Answer 11

Cartridge

Question 12

A specialist fuse known as the … … … fuse is also used

Answer 12

High rupturing capacity

Question 13

When the silver fusing element melts in the rupturing capacity fuse the heat causes the … … to melt and flow between the … … of the fusing element

Answer 13

Quartz powder
Broken ends

Question 14

What are the 3 main causes of earth faults?

Answer 14

Dampness
Insulation becoming hard or brittle with age or heat
Accidental damage