9189PH3ELECTPPT7

What is the run current of a bore hole pump that is fed by a 230V supply and has a power rating of 0.75 kW?

• 3.26 A

• 2.30 A

• 0.75 A

• 7.50 A

According to Ohm's Law, which formula represents the relationship between voltage (V), current (I), and resistance (R)?

• V = I × R

• I = V ÷ R

• R = V ÷ I

• All of the above

Using the power triangle, how do you calculate power (P) if you know the current (I) and voltage (V)?

• P = I ÷ V

• P = I × V

• P = V ÷ I

• P = V × I

If you need to find the voltage (V) using the power triangle and you know the power (P) and current (I), which formula would you use?

• V = P × I

• V = P ÷ I

• V = I ÷ P

• V = I × P

What is the correct formula to calculate resistance (R) using Ohm's Law?

• R = V × I

• R = I ÷ V

• R = V ÷ I

• R = I × V

How is the size of a cable measured?

• In meters (m)

• In kilograms (kg)

• In cross-sectional area (CSA) and normally stated in mm²

• In cubic meters (m³)

What is the overcurrent protective device rating for a radial circuit using BS1363 socket outlets according to the table?

• 20 A

• 30 or 32 A

• 2.5 A

• 1.5 A

What is the maximum floor area served by a ring circuit using BS1363 socket outlets with an overcurrent protective device rating of 30 or 32 A?

• 50 m²

• 75 m²

• 100 m²

• 25 m²

For a radial circuit with a 30 or 32 A overcurrent protective device rating, what is the minimum live conductor cross sectional area for copper conductor mineral insulated cables?

• 1.0 mm²

• 1.5 mm²

• 2.5 mm²

• 4 mm²

What size cable is generally used for lighting according to the rule of thumb provided?

• 1.5mm² twin and earth

• 2.5mm² twin and earth

• 6.0mm² twin and earth

• 10.0mm² twin and earth