Which type of protection for electrical power stations provide isolation against a rise in potential of
station ground and also provide drainage protection against longitudinally-induced voltages?
A.
Isolating transformers
B.
Neutralizing transformers
C.
Mutual drainage reactors
D.
Unit-type neutralizing transformers
E.
2-winding neutralizing transformers
Correct Answer: A
Explanation not available for this question.
Question #2 (Topic: demo questions)
In this future marina layout, what would be the pre-cabling guideline to follow for the terminal A?
A.
Place distribution cable onto the dock and terminate in a suitable cabinet or enclosure. Run service drop to each boat slip.
B.
Provide one or two pair cables from the boat slips to a distribution terminal on the closest point of land.
C.
Pre-cable each boat slip during construction.
D.
For security, each run should be terminated in the patch panel/ cross-connect at the dockmaster or marina office.
Correct Answer: A
Explanation not available for this question.
Question #3 (Topic: demo questions)
A telephone facility and an electrical facility are required in a tunnel. To reduce the effects of EMI and
eliminate the need for additional shielding of the cables, where would each facility be placed?
A.
On opposite sides of the tunnel
B.
On the same sides of the tunnel
C.
ogether on the same pathway for easy access and maintenance
D.
One on the top part and one on the bottom part of the same side of the tunnel
Correct Answer: A
Explanation not available for this question.
Question #4 (Topic: demo questions)
A pay telephone using coins needs to be installed in a public are
a. In the specifications, it is required that the telephone shall meet the ADA (Americans with
Disability Act) requirement for side reach using a wheelchair. What will be the maximum reachable
height or the value of "X"?
A.
760 mm (30 in)
B.
864 mm (34 in)
C.
1170 mm (46 in)
D.
1220 mm (48 in)
E.
1370 mm (54 in)
Correct Answer: E
Explanation not available for this question.
Question #5 (Topic: demo questions)
What is the MINIMUM clearance needed between the front of the telephone booth and any wall or
fixture for most installations