Maurice Tutor

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Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 28 Feb 2018 My Price 5.00

star-connected squirrel-cage

1. A 3φ, 2.5 hp, 210 V, 60 Hz, 4-pole induction motor runs at 1700 rpm. The rotational losses are 150 W. If the rotor resistance per phase is 0.025 Ω, determine the rotor current.

2. The following test results are obtained from a 3φ, 100 hp, 460 V, eight-pole, star-connected squirrel-cage induction machine.

No-load test:                      460 V, 60 Hz, 40 A, 4:2 kW

Blocked-rotor test:          100 V, 60 Hz, 140 A, 8:0 kW

Average dc resistance between two stator terminals is 0:152 Ω

(a) Determine the parameters of the equivalent circuit.

(b) The motor is connected to a 3φ, 460 V, 60 Hz supply and runs at 873 rpm. Determine the input current, input power, air gap power, rotor copper loss, mechanical power developed, output power, and efficiency of the motor.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 28 Feb 2018 10:02 PM My Price 5.00

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