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For the following questions answer them individually
The conductivity of aluminium as compared to copper is
1
0.7
0.6
0.5
What is the type of insulator used for holding the HT overhead conductor on straight running of poles?
Post insulators
Pin-type insulators
Stay insulators
Shackle insulators
The type of lamps having highest illumination efficiency is
mercury vapour lamp
incandescent lamp
Sodium vapour lamp
fluorescent lamp
At what level of current flow during electric shock death is possible .
1 to 8 milli amp
50 to 100 milli amp
10 to 20 milli amp
20 to 50 milli amp
Material used for making small rating fuses is
aluminium
copper
silver
lead and tin
In the circuit breaker, the arcing contacts are made of
electrolytic copper
copper tungsten alloy
aluminium alloy
porcelain
The main consideration in designing Distributor is
transmission voltage
resistance
voltage drop
current carrying capacity
When in dry condition human body resistance is around
$$ 100KΩ $$
$$ 10KΩ $$
$$ 1KΩ $$
zero
The electric flux and field intensity inside a conducting sphere is __________.
maximum
uniform
minimum
Enclosure of motor is made from
cast iron
laminated sheath
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