NUE 052 Practice Test 1

 
 
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1. The current taken by an electric radiator element is 15 amps when connected to a 230V socket outlet. What is the resistance of the element?
1.533 Ohms
 15.33 Ohms
 153.3 Ohms
 1533 Ohms
 
2. A circuit of lighting has a total resistive load of 60 ohms when connected to a 230V supply. What current would the supply cables have to carry?
3.83 Amps
 0.383 Amps
 38.3 Amps
 383 Amps
 
3. The cables connected to a 12 ohm resistor are carrying 25 amps. What would the supply voltage be?
0.3 Volts
 30 Volts
 3 Volts
 300 Volts
4. If a resistance of 0.4 kilohms is connected across a voltage of 200 volts, what will be the current flowing?
5 Amps
 0.5 Amps
 50 Amps
 15 Amps
5. What is the power dissipated by a resistor of 0.06 kilohms when a current of 3 amps is flowing through it?
540 Watts
 54 Watts
 5.4 Watts
 None of the above
6. What is the power being consumed by an electrical appliance that is drawing 7 amps from a 230 V supply?
6.10 Watts
 61 Watts
 610 Watts
 1610 watts
7. A load is consuming 4.5 kW of power when 10 amps is flowing. What is the resistance of the load.
0.45 Ohms
 4.45 Ohms
 45 Ohms
 450 Ohms
8. Which is the correct diagram below to show the ammeter measuring the current taken by the load, and the voltmeter measuring the voltage across the load?
Diagram 1
 Diagram 2
 Diagram 3
 Diagram 4

Diagram 1

Diagram 2

Diagram 3

Diagram 4

9. Current is directly proportional to:

resistance
 amperage
 power
 voltage

10. A high resistance in a circuit causes:

low current
 zero current
 high current
 no change

11. Current flow in a conductor is movement of:

ions
 electrons
 protons
 atoms

12. Current is inversely proportional to:

voltage
 amperage
 resistance
 power

Test Information

Test Score:

 out of 48
(90% score is 40)

 
 
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