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For the following questions answer them individually
Diversity factor is the ratio of _____.
sum of maximum demands of consumers/system maximum demand
maximum demand of consumers/average demand
demand of all consumers/average demand
none of these
Diversity factor x maximum demand is _____.
average demand
sum of consumer's maximum demands
installed capacity
generated capacity
As per recommendation of ISI the maximum number of points of lights, fans, and socket that can be connected in one sub-circuit is _____.
8
10
15
20
Which of the following wiring is preferred for workshop lighting?
casing-capping wiring
Batten wiring
Concealed conduit wiring
Surface conduit wiring
According to fuse law, the current carrying capacity varies as _____.
$$diameter$$
$$(diameter)1.5$$
$$(diameter)\frac{1}{2}$$
$$\frac{1}{(diameter)}$$
The loop earth wire used shall not be of size less than _____.
8 SWG
10 SWG
20 SWG
14 SWG (2.9 mm2) or half of the size of the sub-circuit wireQ
Third pin in a 3-pin plug is provided so as to _____.
provide an earth connection
provide a 3-phase supply, when required
provide a spare phase when required
prevent the plug being reversed in the socket
Which one of the following is used as an active device in electronic circuits?
Transformer
Electric heater
SCR
Loudspeaker
A device having characteristics very close to that of an ideal voltage source is _____.
Vacuum diode
Zener diode
Transistor
FET
For thermionic emission _____.
a material with high work function is preferable
a material with low work function is preferable
the work function of the material has no importance
None of these
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