A 440V, 3-phase , 50 Hz, 4-pole, 15 kW Y-connected induction motor has a full-load speed of 1425 r.p.m. Stator losses are 400 W and the frictional and windage losses are 450W. The rotor has an impedance of (0.4+j4)Ω per phase and rotor/stator ratio is 0.8. Calculate (i) full-load torque (ii) rotor current (iii) full-load rotor Cu loss. (iv) the efficiency of the motor.

Q: A single-phase induction motor with a starting capacitor, bac th e fellowin icationc:

A: The parameters of a single-phase Induction motor are: R1m=Stator Resistance=2ΩX1m=Stator…

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: The synchronous speed of a 3-phase and 6-pole induction motor is 1200 rpm. By keeping the frequency…

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Q: In a 3-phase, 6-pole induction motor, The power crossing the air gap of a 60 Hz is 42.6 kW, and the…

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Q: Find the magnitude and phase angles of the currents in the is applied to the motor under starting…

A: Given,                 P=1KW            V=120V             f=60Hz   a)…

Q: 8T A 4-pole, single-phase, squirrel-cage induction motor operates from a 115V, 50 Hz supply. The…

A: In this question,   We need to determine the output power and power factor of the induction motor?…

Q: 3-phase, 46 pole induction motor is connected to 380 V, 60 Hz supply and drawing 54 A at 0.88 PF…

A: Airgap power = input power - stator losses. Power converted=airgap power-rotor copper losses.  Power…

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A: Three phase induction motor convert the electrical energy to mechanical energy. It consists a rotor…

Q: At rest condition, the slip of induction motor is 1. Select one: O True O False

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Q: he maximum torque of a 3-phase induction motor occurs at a slip of  12%. The motor has an equivalent…

A: Given data Secondary resistance, r2'=0.08 Ω/phase Slip at maximum torque, smT=12% Gross output…

Q: a) The rotor power output of a 3-phase induction motor is 15 kW and the corresponding slip is 4%.…

A: Given - Rotor power output = 15 kW, Slip s = 4%. To Find -  Rotor copper loss.

Q: -Phase 50Hz 6 pole induction motor has rotor resistance of 0.1 ohm and reactance of 0.92. ignore…

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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: The dc series motor has a linear torque- speed characteristics. O True O False

A: The dc series motor has a inverse torque-speed characteristics.

Q: Q3 For the double-beam oscilloscope displays shown in Figure determine (a) their frequency, (b)…

A: In this question,  Find the rms voltage, frequency and phase difference between waveforms A and B.…

Q: calculate (i) the slip (ii)the e.m.f. induced in rotor in each phase (iii) the rotor resistance per…

A: A 3-phase star connected induction motor has,  frequency f=50 Hz,  No.of poles (P)=4 At standstill…

Q: A 4 Pole, 50 Three Phase Motor 25 Kg. The meter produces a maximum torque of 1350 Nm per minute. So…

A: Solution : Given data: pole P= 4 , frequency f=50 ,  Three Phase Motor Tm=  25 Kg, produces a…

Q: ole,single-phase, squirrel-cage induction motor operates from a 115V, 50 Hz supply. Th measured…

A: Given data is shown below. 1∅, P=4, f=50Hz, 115VNr=1400rpmStator impedance=1.9+j2.7Rotor…

Q: 5. A 230V series motor with 4-pole, 600 conductors wave-connected supplying a load of 7.5kW by…

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Q: A 3-phase, 2200-V, delta-connected, 12-pole 60-Hz induction motor runs at no load with rated voltage…

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Q: Three-phase, 50 Hz 34500/10500 T/S ​​connected transformer single-phase visible on the side of the…

A: There is confusion in the transformer connection T/S it would be D/S that is delta-star. Hence,…

Q: In an Induction motor, if the load is decreased, what happens to the power factor?Select one:a.…

A: When the load on an induction motor decreases, the motor draws less real power but still requires a…

Q: At rest condition, the slip of induction motor is 1. Select one: True False

A: Solution : Slip of  induction motor is 2 to 3% when the motor is operated under the rated load.

Q: A 460-V, 25-hp, 60-Hz, four pole, Y-connected induction motor has the following impedances in ohms…

A:

Q: 2. A 3-phase, 400-V, Y-connected induction motor has an equivalent T-circuit consisting of R₁ = 192,…

A: Given data, No. of phases=3 Voltage (V)=400VR1=1ΩR2'=1.2ΩX1=1ΩX2'=1.5ΩImpedance=(4+j40)Ω

Q: A 3-phase, 60 Hz induction motor has 2 poles. If the slip is 2% at a certain load, determine the…

A: Given parameters Frequency = 60 Hz Number of poles = 2 Slip = 2%

Q: If the initial state for LFSR shown below [Q3 Q2 Q1 Q0] = [1010], what is the state after five clock…

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Q: A 460 V, 25 hp, 60 Hz, wye-connected, four-pole induction motor has the following impedances in ohms…

A: Note : As per the rules we can answer only 3 sub-parts, please post the remaining sub-parts as the…

Q: The power input to the rotor of 440 V, 50 Hz, 6-pole, 3-phase, induction motor is 80 kW at a slip of…

A: Supply voltage,VS = 440 VSupply frequency,f = 50 HzNumber of poles, P = 6Input power,Pg = 80…

Q: A three-phase, 440-V, 60-Hz, wye-connected induction motor takes a stator current of 50 A at 0.8…

A: It is given that:

Q: The rated speed of a three-phase, 2-pole, 50 Hz cage induction motor is more likely to be d) 1750…

A: Given: A 3-phase cage induction motor has, Number of poles, P=2. Rated frequency, f=50 Hz.

Q: A 3-phase, 60 Hz induction motor has 2 poles. If the slip is 2% at a certain load, determine  the…

A: We need to find out speed and frequency for given motor.

Q: A three phase induction motor with "Design A" characteristics is used as an air circulation fan in…

A: Given No load and blocked rotor data of induction motor

Q: An 60 Hz, three-phase induction motor has 2 poles and a rotor resistance of 0.19 per phase and runs…

A: Given diagram,No of poles P = 2Frequency f = 60 HzRotor resistance R = 0.19 ohm,Full load speed =…

Q: Q) The rotor power output of a 3-phase induction motor is 15 kW and the corresponding slip is 4%.…

A:

Q: The rotor of a 3-phase, 60-Hz, 4-pole induction motor gets a total of 120kW through the air gap with…

A: Given, A 3-phase induction motor has, Supply frequency, f=60 Hz. Rotor frequency, f=3 Hz. Number of…

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.