:1: We have an electric motor that used to drive fan machine. The electric motor has specification: voltage 220 Volt single phase, frequency 50 Hz, current 0.5 Ampere and cos phi 0.6. How many power of electric that used the motor?


:catat: Answer:
V = 220 Volt
f = 50 Hz
I = 0.5 A
Cos phi = 0.6
P = ... ?

P = V I Cos phi
P = 220 * 0.5 * 0.6
P = 66 Watt.

:2: The electric motor has specification: voltage 110 Volt single phase, frequency 60 Hz, current 3.3 Ampere and cos phi 0.75. How many power of electric that used the motor?

:catat: Answer:
V = 110 Volt
f = 60 Hz
I = 3.3 A
Cos phi = 0.75
P = ... ?

P = V I Cos phi
P = 110 * 3.3 * 0.75
P = 272.25 Watt.

:3: The electric motor has specification: voltage 400 Volt single phase, frequency 70 Hz, current 10 Ampere and cos phi 0.65. How many kilo Watt power of electric that used the motor?

:catat: Answer:
V = 400 Volt
f = 70 Hz
I = 10 A
Cos phi = 0.65
P = ... ?

P = V I Cos phi
P = 400 * 10 * 0.65
P = 2600 Watt
P = 2.6 kW.

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