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Assessment 1- Unit 16 Verify compliance of low voltage systems
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Test instructions
All questions have equal marks.
Do not cheat in this exam.You would be penalized if you are caught.
Be silent and wait for instruction from the examiner.
Put away all the cell phones.
Quietly leave the test room after the test.
Raise up your hand if you need help.
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Q1
Score: 1
a.Protection against shock under fault conditions
b. Protection against shock under fault free conditions
c.Protection against contact with live parts under fault free conditions
d.Protection against faults under sound electrical conditions
Q2
Score: 1
a. 0.25 W
b. 0.5 W
c. 1.0 W
d. 2.0 W
Q3
Score: 1
a. Breakers and fuse
b. Overload and excessive temperature
c. Electric shock and explosive atmosphere
d. Earthing and excessive temperature
Q4
Score: 1
a. Bonding
b. Connection of exposed metalwork to the protective conductor
c. Earthing in the fixed wiring of the installation
d. Supplementary insulation
Q5
Score: 1
a. 25ms
b. 50ms
c. 75ms
d. 100ms
Q6
Score: 1
a. Direct and indirect contact
b. Thermal effects and vibration
c. Explosive atmosphere
d. Abnormal mechanical movement
Q7
Score: 1
a. Barriers and enclosures to IPXXB or IP2X
b. Insulation of live parts
c. Protective earthing and protective equipotential bonding
d. Placing out of reach
Q8
Score: 1
a. A
b. B
c. C
d. D
Q9
Score: 1
a. In parallel with the power supply
b. Next to the most vulnerable component
c. In parallel with the most vulnerable component
d. Next to the power supply
Q10
Score: 1
500 watta
1 kw
2 kw
4 kw
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