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Why Motor rated in kW instead of kVA?

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There are two type of losses in a transformer; 1. Copper Losses 2. Iron Losses or Core Losses or Insulation Losses Copper losses ( I²R)depends on Current which passing through transformer winding while Iron Losses or Core Losses or Insulation Losses depends on Voltage. So the Cu Losses depend...
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There are two type of losses in a transformer; 1. Copper Losses 2. Iron Losses or Core Losses or Insulation Losses Copper losses ( I²R)depends on Current which passing through transformer winding while Iron Losses or Core Losses or Insulation Losses depends on Voltage. So the Cu Losses depend on the rating current of the load so the load type will determine the powerfactor P.F , Thats why the rating of Transformer in kVA,Not in kW. Designer doesn’t know the actual consumer power factor while manufacturing transformers and generators i.e. the P.F (Power factor) of Transformer and Generator/Alternator depends on the nature of connected load such as resistive load, capacitive load, and inductive load as Motors, etc. But Motor has fixed Power factor, i.e. motor has defined power factor and the rating has been mentioned in KW on Motor nameplate data table. That’s why we are rated Motor in kW or HP (kilowatts/ Horsepower) instead of kVA. In addition, Motor is a device which converts Electrical power into Mechanical power. In this case, the load is not electrical, but mechanical (Motor’s Output) and we take into the account only active power which has to be converted into mechanical load. Moreover, the motor power factor does not depend on the load and it works on any P.F because of its design. read less
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B.Tech(EC/EE/IN),Math(IX,X,XI,XII std.),Physics(IX,X,XI,XII std.) CBSE/ICSE/IB.

motor has defined power factor and the rating has been mentioned in KW . That's why we are rated Motor in kW or HP (kilowatts/ Horsepower) instead of kVA. also, Motor is a device which converts Electrical power into Mechanical power
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Maths and physics teacher till engineering level

motor has defined power factor and the rating has been mentioned in KW . That's why we are rated Motor in kW or HP (kilowatts/ Horsepower) instead of kVA. also, Motor is a device which converts Electrical power into Mechanical power
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Researcher

Motor has a fixed Power factor, i.e. motor has a defined power factor and the rating has been mentioned in KW...
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Electrical Engineering

KW means involves pf. KVA means rated(true) power.. Not only motor alone has kw rating, all the load have kw..
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Quality teaching with intense care

Motor converts electrical energy into mechanical energy. Only the active power flows through motor shaft. Also the power factor of the motor is independent of load power factor unlike alternators where power factor of load affects the overall power factor. Thus alternators may need to supply or consume...
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Motor converts electrical energy into mechanical energy. Only the active power flows through motor shaft. Also the power factor of the motor is independent of load power factor unlike alternators where power factor of load affects the overall power factor. Thus alternators may need to supply or consume reactive power depending on load power factor. However in case of motor it has to supply the active power only as only mechanical load can be connected to motor shaft. Hence the rating is in kW or W or H.P. and not in KVA. read less
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math magician

because of power factor
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Motor power factor are fixed and the motor converted to electrical to mechanical so that the motor rating in kw(kilo watt)
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