Interested to Buy Any Domain ? << Click Here >> for more details...
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions.
a) calculate its final steady state temperature rise on continuous load and the heating time constatnt.
b) if the motor is operated on a short load for 9 min estimate its temperature rise.
c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
- 0 Answers
- 1155 Views
- I also Faced
- E-Mail Answers
No Answer is Posted For this Question
Be the First to Post Answer
what r the sizes of CB's? how to select CB's?
if a motor has 1500rpm then what will its HP?
If a 3 phase induction motor is in off condition in the conveyor and rotor of the motor keeps moving with the conveyor than the resistance of windings of motor varies. why is it so ??
Thumb rule for capacitor bank calculation
What is FTA card? How it works?
100 MVA 3-phase alternator with earthed neutral has a reactance of 5 ohms per phase. what will be the fault MVA of generator.
what is vfd?
What is spill current in protection relays?
if the transformer at full load have a iron loss =900w and copper loss = 1600w . what percent of the load will the transformer has a maximum efficiency?
A 11 KV motor is working. if the supplay is fail. what will happened with it's breaker? Trip / remain the same condition?
How Grading Rings & spacers in transmission lines works?working principle?
How many size of cable required for a 300m long and 30kw inductive lode
-
Civil Engineering (5086) - Mechanical Engineering (4453)
- Electrical Engineering (16638)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
