202: Principles of Electrical Science

From a 50 metre cable drum, you have installed 13.6 metres of cable.                                What percentage of cable has been used?

• 3.8%

• 72.8%

• 27.2%

• 65%

An insulation resistance tester is used to record the following values:                                  55MΩ, 72MΩ, 55MΩ, 18.5MΩ, 10MΩ and 89MΩ. What is the mean of these values?          

• 49.9Mohms

• 89Mohms

• 55Mohms

• 18.5Mohms

Potential Difference is measured in?

• Amps

• Volts

• Newton's

• Joule's

In the SI system, time is measured in?

• Hours

• Minutes

• Seconds

• Kelvin's

Which instrument would be used to measure the resistance of a circuit?

• Ohm Meter

• Conductance meter

• Continuity meter

• Amp meter

The SI unit for Capacitance is the?

• Volt

• Henry

• Hertz

• Farad

A load generates a force of 300 Newton’s. Calculate the mass of the load.

• 3.6kg

• 3060kg

• 306kg

• 30.6kg

Crowbars are an example of what type of lever?          

• Class 1

• Class 2

• Class 3

• Class 4

Force on a load is considered to be a combination of:

• Mass and gravity

• time and acceleration

• weight and energy

• energy and work done

A four pulley system is required to lift a load force of 20000 Newton’s.                               What is the effort force required to lift this load?       

• 5000N

• 80000N

• 5000kg

• 10000N