A 3-phase 440V, wye connected induction motor has a star-connected stator and delta connected rotor with a turns ratio of 10. The rotor resistance and standstill reactance per phase are 0.01Ω and 0.2Ω respectively, what will be the rotor voltage per phase at standstill?

Q: 'hy does a slip occur in the three-phase induction motor? Expla

A: In a three phase induction motor, a three phase supply with a phase difference 120…

Q: In an induction motor, if the rotor is locked, then the rotor frequency of induction motor will be:…

A: Given: In an induction motor, the rotor is locked.

Q: following impedances in ohms per phase referred to the stator circuit: R1 = 0.1R 2, X = RQ, R2 =…

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Q: If the no-load speed of a squirrel cage induction motor connected to a three-phase, 50 Hz is 12.…

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Q: At starting of an Induction motor, the frequency of the rotor induced voltage would be

A: Mutual Induction:  Whenever flux in one coil links with the second coil, an EMF is induced in the…

Q: In a DC motor the relation between the core loss (Pcore) and rotational loss (Protational) iS O…

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Q: We use stroboscope to calculate the torque of three- phase induction motor?* True False

A: Scroboscope is used to measure the speed of induction motor.

Q: Calculate the rotor reactance per phase of an 8 pole, 50Hz, 3Ø induction motor which develops a…

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Q: 2. A 220V 30 6poles 50Hz induction motor is running at a slip of 3.5 %. Find the following: (a) slip…

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Q: If rotor of an induction motor turns at synchronous speed, the frequency of the rotor will be zero.…

A: In this question we need to verify the given statement is true or false.

Q: An 8 pole single phase induction motor is running at 690 rpm.what is the slip with respect to…

A: Given: A single phase induction motor with Number of poles, P=8 Motor speed, Nr=690 rpm

Q: A permanent split single phase induction motor dose not have a squirrel cage rotor

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Q: A 10-pole, 3-phase induction motor operates from a supply with frequency 55 Hz. Calculate the speed…

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Q: What is the copper loss in the rotor circuit in kW? An induction motor is running at 40% of the…

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Q: A 3-phase, 60Hz, 4-pole induction motor has a rotor leakage reactance of 0.8Ω per phase and a rotor…

A: The solution is given below

Q: The rotor reactance of the three phase induction motor is varies with of the rotor current.

A: According to the question we have to discuss the induction motor reactance.

Q: 17. A small single phase, 240 V induction motor is tested in parallel with 160 N resistor. The motor…

A: It is given that: V=240 VR=160 ΩIm=2 AIT=3 A

Q: A 18600 W induction motor with six poles operates at 60Hz and shows a full-load slip of 6%: i) What…

A: Given: An induction motor has, Rated power, P0=18600 W Poles, P=6 Frequency, f=60 Hz Slip, s=6%=0.06…

Q: the efficiency of the 1 phase induction motor could be better increased by adding a permanently…

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Q: In an induction motor, if the rotor is locked, then the rotor frequency of induction motor will be:…

A: Given that  The rotor of the induction motor is locked. Then the rotor frequency of the induction…

Q: he speed of an induction motor fed from a 3-phase and 50 Hz source is 1440 rpm, so which of the…

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Q: A 3-phase induction motor has 6 poles and the operating frequency is 55HZ. Actual speed of the rotor…

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Q: A three phase induction motor operating at a slip of 5 % develops 20 kw rotor output power. What is…

A: The rotor copper loss in the above given operating conditions is calculated as shown below:

Q: A 3-phase induction motor is wound for 2 poles and is supplied from 59-Hz system. When slip is 4%,…

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Q: If the supply voltage in a three-phase induction motor is reduced by 10%, what will be the…

A: Given, The supply voltage of a three phase induction motor is reduced by 10 %. Let, E1=EE2=0.9E

Q: In the brushless induction motor, one of the following can be used to reduce the starting current…

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Q: The power supplied to a three-phase induction motor is 20kW and the stator losses are 1000W. If the…

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Q: 2. A 3-phase induction motor is connected to a 3-phase, 440V/50Hz ac source. What is the frequency…

A: Given: A 3-phase induction motor is connected to a 3 phase ac source having, Voltage, V=440 V…

Q: which of the following is sometimes referred to as the motor secondary of a 3 phase induction motor…

A: In 3 phase induction motor supply is given to stator from stator power is induced in rotor through…

Q: Rotor resistance of a three-phase induction motor is 0.080 per phase. Maximum torque is available at…

A: We have an equivalent circuit of induction motor with, Maximum torque occurs at 12% slip = 0.12 Slip…

Q: 3 Phase 50 Hz 25 Hp asynchronous motor 415 V triangle is working. It rotates at 1480 rpm/mın under…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: Draw the squirrel cage rotor of the three phase induction motor and explain the same.

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Q: Explain why rotator rotates in three phase induction motor

A: Induction Motor: The Induction motor is basically a rotating machine. It converts  Three phase Ac…

Q: The full load speed of a 60 Hz, 3-phase induction motor is 1120 r.p.m. The number of poles in the…

A: induction motor always near to synchronous speed  and synchronous speed =120*frequencyn. of poles…

Q: The armature of a DC machines is made up of If a 3-phase induction motor has synchronous speed of…

A: find explanation below

Q: A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in…

A: We need to find out cage current frequency for given motor

Q: the single phase induction motor can not be rotate without auxiliary winding * I true ) false

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Q: Which of the following NEMA design classes of Induction motor has double-cage rotor? Both Class-D…

A: Class C

Q: The rotor power output of three phase induction motor is 15 kW. What would be the rotor copper loss…

A: Given the rotor power output of three phase induction motor is, Rotor Po/p=15 kW Slip, s = 4 % =…

Q: If a 4-pole induction motor has a synchro- nous speed of 1500 rp.m., then, supply fre- quency is (1)…

A: Given, An induction motor with, Number of poles, P=4 Synchronous speed, Ns=1500 rpm

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.