Unit 202 revision #1

What is the force 'F' acting on the beam shown in figure 1 if it is in state of equilibrium?

• 2N

• 20N

• 40N

• 5N

What parts would you find within an alternator?

• Slip-rings and brushes

• Commutator and brushes

• Brushes and a centrifugal switch

• Commutator and a permanent magnet

The typical type of battery located within a cordless drill is

• SELV

• Alkaline

• Lithium Ion

• Nickel Cadmium

The typical voltage found within domestic installations in the UK is

• 400V

• 230V

• 110V

• 240V

Why is the A.C. voltage supply system used within the UK, rather than a D.C. voltage?

• The electricity is cheaper

• The D.C. batteries would need to be extremely large

• AC voltage can be stepped up and down with transformers

• The voltage is much larger.

Which formula can be used to calculate the total resistance in a parallel circuit:

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What is the nature of the electrical charge found on the proton within the nucleus?

• Negative

• Positive

• No charge

• Changing

The right hand grip rule is used with:

• Current carrying conductors

• Cutting threads on conduit

• DC motors only

• When tightening a gland on MIMS cable

What are the S.I. units for Force?

• Neutron

• Tesla

• Newton

• Weber

Which is the correct formula for finding the resistance from this formula ?

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