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Study MCQ
Wireman
CONTROL PANEL WIRING AND MAINTENANCE
Set 3
Set 3
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Q13723
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Which accessory is used to insulate and hold the cables, if they pass through punched or drilled hole in control panel?
A
Grommet
B
PVC channel
C
Wire clips
D
Wire sleeves
Q13724
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Which is the minimum spacing between components and raceways in panel board if system voltage is 415V?
A
50 mm
B
100mm
C
60 mm
D
75 mm
Q13725
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Which colour of earth wire is used in control panel to earth door and cabinet?
A
Red
B
Yellow
C
Blue
D
Green yellow
Q13726
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Which test is to be done regularly in panel board with priority?
A
Main power contacts condition
B
Insulation resistance and earth continuity
C
MCB connection
D
Filter and cooling fan
Q13727
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Which is the advantage of periodical maintenance of control panel?
A
Reduces power cost
B
Assured over loading
C
Ensure safety to the machine and operators
D
Helps continuos operation
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