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Electric Power And Energy
Test Description: Energy consumed by electric appliance
Instructions: Answer all questions to get your test result.
1) Kilo watt =
A
1000 watt
B
10 watt
C
100 watt
D
1 watt
2) The inscription 100 watt of a lamp indicates :
A
rated energy
B
rated voltage
C
rated power
D
rated current
3) A Fridge (220V ,10A ) consumes electric energy of value
A
2.2 Kwhr
B
110 kwhr
C
2200 Kwhr
D
220kwhr
4) The electric meter of EDL measures the consumed electric energy in
A
WattHr
B
wattsec
C
Joule
D
KwattHr
5) A lamp marked (6V ,4A),It consumes a power is :
A
2watt
B
10watt
C
48watt
D
24watt
6) Lead lamp is preferable on the incandescent lamp because :
A
Dissipate less energy
B
None of the above choices
C
Dissipate less current
D
Dissipate less voltage
7) Electric energy is written as E=
A
PR
B
PU
C
Pt
D
PI
8) The unit of power in SI unit is :
A
Ampere
B
Volt
C
Watt
D
Joule
9) A resistor consumes electric energy and transforms it to heat is called :
A
Ohm's effect
B
Joule's effect
C
Ampere's effect
D
Hook's effect
10) the law of power is P =
A
RI
B
UI
C
RU
D
EI
*select an answer for all questions
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