A 3 phase , Y-connected , 220 V , 10 H.P , 6 pole , induction motor has the following constants per phase referred to stator R1=0.3 ohm , R2=0.15 ohm , X1=0.5 ohm , x2=0.2 , Xm=12 ohm The total friction and windage losses are 1000 W . For slip of 0.02 compute Tout and efficiency ?

the field windings of a series motor has a resistance of 120 ohms at 15° c. after running for 2 hours, the resistance has increases to 140 ohms. if the temperature coefficient of the windings at 0°C is 0.004, find the new temperature of the windings

6- Which of the following supply is given to the rotor winding of 3-Phase Induction Motor: a) DC Supply b) AC Supply c) No Supply d) Pulsating Supply 7- 3-Phase Induction Motor will have Starting Torque and Starting Current a) High, High b) Low, Low. c) High, Low d) Low, High 8- Which of the following method is used for controlling the speed of an induction motor: a) Changing number of stator poles b) Supply voltage control c) Frequency control d) All the options are correct 9- Which of the following method cannot be used for starting of 3-Phase Squirrel Induction Motor: a) Star-Delta Starting b) Line resistor startling c) transformer Starter d) Rotor Resistance Starting 10- The rotor of a stepper motor has no: a) windings b) commutator c) brushes d) all of the above

Please solve 209V, three-phase, Six poles, Y-connected induction motor has the following parameter: R1=0.128 Ohm, R'2=0.0935 Ohm, Xeq=0.49 Ohm. the motor slip at full load is 2% and for a Fan-Type load, Calculate following below : I have the Final answers and I do need to step by step which the formula and solution. Please if you use handwriting to write clearly and big. Thanks, The final and correct answers are: Problem3 (Reducing supply voltage) a) motor speed: 1163.3 rpm, b) starting torque= 71.93 Nm, c)starting current=179.5A, efficiency= 93.04%

A 460-V, 25-hp, 60-Hz, four pole, Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R₁ = 0.641Ω R₂ = 0.3320 X₁ = 1.106Ω X₂ = 0.464Ω RM = 26.3Ω The total rotational losses are 1100 W and are assumed to be constant. The core loss is lumped in with the rotational losses. For a rotor slip of 2.2 % at the rated voltage and rated frequency, find the motor's a) Speed d) Pconv and Pout b) Stator current e) Tind and Tload c) Power factor f) Efficiency Activate

A) Although the magnetic field for each phase of a 3-phase induction motor is merely switching back and forth between north and south poles, the resultant magnetic influence from all phases sets up a rotating magnetic field to cut the rotor conductors. a) true b) false B) In a two-pole stator winding of a 3-phase motor, how many revolutions does the rotating tr) magnetic field make in one cycle of the electrical current? a) one b) 60   c) 3600 d) none of the above

A 3-0, 50-Hz induction motor with its rotor star-connected gives 500 V (r.m.s.) at standstill between slip-rings on open circuit. Calculate the current and power factor in each phase of the rotor windings at standstill when joined to a star-connected circuit, each limb of which has a resistance of 10 Q and an inductance of 0.03 H. The resistance per phase of the rotor windings is 0.2 Q and inductance 0.03 H. Calculate also the current and power factor in each rotor phase when the rings are short- circuited and the motor is running with a slip of 4 per cent. [13.6 A, 0.48; 27.0 A, 0.47] (London University) A 4-pole, 50-Hz, 3-phase induction motor has a slip-ring rotor with a resistance and standstill reactance of 0.04 2 and 0.2 2 per phase respectively. Find the amount of resistance to be inserted in each rotor phase to obtain full-load torque at starting. What will be the approximate power factor in the rotor at this instant ? The slip at full-load is 3 per cent. [0.084 2, 0.516 p.f.]…

A 6 pole, 230V, 60 H z, Y connected three-phase induction motor has the following parameters on a per-phase basis: R1 = 0.5 2, R2 = 0.25 2, X1 = 0.75 2, X2 = 0.5 2, Xm= 100 2 and Rc = 500 2. The friction and windage loss is 150 W. Determine the efficiency and the speed of the motor at its rated slip of 2.5%. Assume using exact equivalent circuit.

A 6 pole, 230V, 60 H z, Y connected three-phase induction motor has the following parameters on a per-phase basis: R1 = 0.5 , R2 = 0.25 , X1 = 0.75 , X2 = 0.5 , Xm= 100  and RC = 500 . The friction and windage loss is 150 W. Determine the efficiency and the speed of the motor at its rated slip of 2.5%.Assume using exact equivalent circuit.

Please solve this problem step by step and illustrate your answer properly. Write your answer in a piece of paper please. Box the final answer.