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Household Circuit > Part A > Flashcards

Part A Flashcards

1
Q

How much power is produce from power station to grid sub station

A

11kv

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2
Q

The grid substation step up 11kv to how much kv

A

132kv

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3
Q

Main substation step down 132kv to

A

33kv

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4
Q

Intermediate substation step down 33kv to

A

11kv

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5
Q

City sub station step down 11kv to

A

220v

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6
Q

How much volt of current are sent to our house

A

220v

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7
Q

How muck kv is transferred to heavy industries from where

A

33kv from main substation

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8
Q

How much current us transfer to light industries from where

A

11kv from intermediate substation

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9
Q

What are the three wire in a cabel

A

Live, nutral and earth wire

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10
Q

Why the neutral and earth wire has same potential

A

The both wire are connected together in local substation

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11
Q

What is the function of live and neutral wire

A

Live wire carry current to the distribution board while the neutral wire is for return of current back to source

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12
Q

If it is safe to use copper wire in fuse

A

No it is not safe

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13
Q

State some characteristics of main switch

A

*It is a double pole switch
*It has iron covering
*The covering is earthed

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14
Q

Which wire we can use to connect more appliance in the same wire thick or thin

A

We can use thick wire
Because if we connect many appliances in the thin wire more current cannot pass through it it may cause fire

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15
Q

The main fuse is connected in

A

Live wire

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16
Q

The electrical appliance in a house are connected in

A

Parallel

17
Q

The electric meter in a house records the consumption of

A

Energy

18
Q

Advantage of connecting the appliance in parallel

A

*Each appliance gets connected to 220v supply for its normal working
*Each appliance operate independently without being affected by presence or working of other appliance

19
Q

Disadvantage of connecting the appliance in series

A

*on connecting one or more appliance in the same circuit then resistance of circuit will increase
*All connected appliance are operate simultaneously if one is switched off then we cannot operate no other appliance connected in this series

Household Circuit (1 decks)

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