The no-load current drawn by transformer is usually what per cent of the full-load current ?
2 to 5 per cent
0.2 to 0.5 per cent
12 to 15 per cent
20 to 30 per cent
2 to 5 per cent
…………. gives a diversion of 90 degree in the turn of a conduit
Tees
Elbow
Couplers
Bends
Bends
………….are used to take diversion from the main line either to the switch points at light points.
Couplers
Elbow
Tees
Bends
Tees
Small circular boxes shall be provided with two machine screws of a diameter not less than …………. mm for fixing the covers
8
9
0
4
8
Large circular boxes shall be provided with two machine screws of a diameter not less than …………. mm for fixing the covers
0
8
4
9
0
The most common joining conduits with fitting uses ………….
All the above
Solvent adhesive
Gum
Hacksaw frame
Solvent adhesive
PVC conduits not exceeding ………….mm diameter can be bent cold by using a spring
25
50
30
45
25
Cold bending could be done using a ………….
Knee
Hand
Hack saw frame
Spring
Spring
Factors to select the correct size of conduit depends on………….
Size of cables
Number of cables to be drawn
Both a & b
None of these
Both a & b
When (B)5 sq. mm 640 V grade single core cables of six numbers are to be drawn in a single run we can use ………….non-metallic conduit
25
50
40
30
25
पोस्ट अच्छी लगी हो तो प्लीज नीचे दिए गए लिंक पर क्लिक कर शेयर जरुर करें
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