At standstill condition , the slip of induction motor is 1. Select one: O True O False
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: What is the electrical angle in degrees if the developed reluctant torque attained maximum value in…
A: Solution: The reluctance torque of a salient pole synchronous motor is, Trel=V221Xq-1Xdsin2δ…
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: A single-phase induction motor with a starting capacitor, 600 watts, quadrupole has the following…
A: input power =600 input power=600 R1=2ΩR2'=5Ωxm=100Ωx2'=4Ωx1=4Ω
Q: Define the working of the Single phase induction motor with the properly labelled diagrams.
A: Working Principle of single Phase Induction Motor: Working Principle of single Phase Induction Motor…
Q: In an induction motor, if the supply voltage is above normal then the machine will operate with High…
A: In this question we need to choose a correct option.
Q: At rest condition, the slip of induction motor is 1. Select one: O True O False
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Q: a) The figure below shows the per-phase equivalent circuit of a two- pole three-phase induction…
A: The solution is provided in the step.
Q: Q2: If the rated frequency for an induction motor is 60 Hz and the maximum tonque Tm is 100 N.m,…
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Q: (a) Calculate the synchronous speed of an eight-pole induction motor when supplied with power from a…
A: Given: An induction motor has following specifications, Number of poles, P=8 Frequency of source,…
Q: 4. A 3 phase,50HZ ,8 pole induction motor has a full load slip of 4%. The rotor resistance is…
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Q: The core loss in a three phase induction motor is 100W and equals the loss. Stator copper loss is…
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Q: The name-plate of a squirrel-cage induction motor has the following information: Rated power: 25 hp;…
A: Induction motors typically referred to as cage motors, use magnetism to form motion. cage motors get…
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: 11/ Name the type of three-phase induction motor, which provides low starting torque. a. Squirrel…
A: Option) a Squirrel cage rotor have the low starting torque , the starting cannot be increased by…
Q: 4.1 Which of the following statements about a squirrel cage induction motor is false? (a) It has no…
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Q: The starting torque of slip ring induction motor is O Low O Negligible O High O Medium
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Q: Q11: Draw the circuit, equivalent circuit and the torque speed characteristics of a single phase…
A: Answer -
Q: How does the equivalent circuit of an induction motor simplify to under blocked rotor conditions?…
A: TESTING OF INDUCTION MOTOR: No-load test. Blocked rotor test. Stator winding resistance test.…
Q: The shunt field winding of the DC motor has less turns of thick wire. Select one: O True O False
A: The shunt field winding of the DC motor has less turns of thick wire.
Q: 2. What is the speed of an induction motor of six poles at 60 HZ, if the percent slip is 2.5 %?
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Q: series motors has a very high starting torque because its armature resistance is small O True O…
A: Given A true or false question based on series DC motor. Please find the answer below
Q: When a series dc motor is operated at load, which of the following conditions occurs
A: OPTION A i.e The field current increases is the correct answer
Q: Draw the equivalent circuit of Induction motor and explain its different parameters.
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Q: 1. Which of the following methods is not used for starting an induction motor? a) Adding a…
A: There are various methods of starting induction motor. resistance start, capacitor start, rotor…
Q: 1. In a single-phase induction motor with a starting capacitor, find the reactance value Xc of the…
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Q: the single phase induction motor can not be rotate without auxiliary winding * I true ) false
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Q: (a) The typical starting current for induction motor (i.e., at s=1) is five to eight times of the…
A: Induction motor:- It is a AC motor that runs at lower speed than synchronous speed so it is also…
Q: cion 1 ne plate if an induction motor include the following data: P=5954W, cos(phi)-0.94, 50HZ,…
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Q: 1- No load test Inoloed = 6A V=380 P300 Pr=300 2/ From the no load test Induction motor Find;
A: Given No load test of the induction motor
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: 3.1. The rated speed of a three-phase, 6-pole, 50 Hz cage induction motor is more likely to be c)…
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Q: A three phase induction motor with supply frequency of 60 Hz , 6 poles. If the slip is 3 % at a…
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Q: The name-plate of a squirrel-cage induction motor has the following information: Rated power: 25 hp;…
A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: If the frequency applied to a 3-ph induction motor is increased by 44%, then the ratio of the…
A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…
Q: A six-pole induction motor operating in the United States has a rated slip of 3%. What is its rated…
A: Given, An induction motor operating in United states has, Number of poles, P=6. Rated slip,…
Q: 5-Which of the following statements regarding single phase induction motors correct? (a) It requires…
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Q: A three-phase induction motor is supplied with power from a 60-Hz source. At full load the motor…
A: In this question, Synchronous speed Ns = 1800rpm We know stator field = rotor field = Ns = 1800rpm…
Q: then the frequency f =...
A: Given data: Number of poles (P)= 6 Synchronous Speed (Ns ) = 40 rev/sec Frequency (F)=? -…
Q: At rest condition, the slip of induction motor is 0. Select one: True False
A: slip of induction motor = Synchronous speed - motor speedsynchronous speed
Q: A 3 phase,50Hz ,8 pole induction motor has a full load slip of 4%. The rotor resistance is 0.001Ω/ph…
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Q: A 6-pole, 3-phase, 50 Hz induction motor develops a maximum torque of 30 Nm at 960 r.p.m. Determine…
A: An induction motor, also known as an asynchronous motor, is an AC electric motor in which the…
Q: 18. What is the frequency on the rotor of a 3-phase squirrel-cage induction motor, when the rotor is…
A: When the rotor is at standstill condition, the speed of the rotor is zero. So, the value of slip is,…
Q: A) At what percentage of slip is the pull-out or breakdown torque of a typical 3-phase squirrel-…
A: Pull out torque is also called as maximum torque. And can also be called as breakdown torque. If the…
Q: Define the working of the Three phase induction motor with the properly labelled diagrams
A: Three Phase induction motor is a widely used machine for any industrial and domestic purposes. it is…
Q: The starting torque of slip ring induction motor is High Negligible Medium O Low
A: Slip ring induction motors have major advantages on another induction motor This starting…
Q: A 3-phase induction motor has a synchronous speed of 250 r.p.m. and 4% slip at full-load. The rotor…
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Q: A 3 phase, 4 pole, induction motor has rotor resistance of 0.04 W per phase. The maximum torque…
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Q: 1_Plot the relationship between the torque and the speed for single-phase induction motor (split…
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
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- At rest condition, the slip of induction motor is 1. Select one: O True FalseWe use stroboscope to calculate the torque of three- phase induction motor?* True O FalseThe frequency of rotor current in an induction motor is slip times the frequency of stator current. slip times the frequency of supply, One by slip times the frequency of stator current. One by slip times the frequency of supply
- In three-phase induction motor rotor speed is zero at the time of starting the induction motor. Select one: True FalseWhat are the following statements are true for a three-phase induction motor? I. Three-phase induction motor stator winding is fed from a single-phase supply II. Stator carries a three-phase winding III. Rotor carries a short circuited winding a. I,II and III b. I only c. I and II only d. II and IIIWhen slip of a three phase induction machine becomes negative, it will be functioning as a motor. Select one: True False
- Discuss the following statements briefly 1. Adding auxiliary winding in single phase induction motors. The starting capacitor of a capacitor start capacitor run induction motor is 100 µF while the running capacitor is 14 µF.1. The operation of Commutator in DC Motor is * O a) to convert dc to ac O b) to convert ac to dc O c) to convert fixed dc to variable dc O reverse the current direction in the rotating windings each half turnA four-pole induction motor drives a load at 2478 rpm. This is to be accomplished by using an electronic converter to convert a 400-V dc source into a set of three-phase ac voltages. Part A Find the frequency required for the ac voltages assuming that the slip is 4 percent. The load requires 2 hp. Express your answer to three significant figures and include the appropriate units. f= Submit Part B Value I = HA Request Answer Submit If the dc-to-ac converter has a power efficiency of 90 percent and the motor has a power efficiency of 80 percent, estimate the current taken from the dc source. Express your answer to three significant figures and include the appropriate units. HÅ Value Units Request Answer ? Units ?
- 3.4 The rotor power output of 3-phase induction motor is 15 k. The rotor copper losses at a slip of 4% will be (a) 600 W (c) 650 W (b) 625 W (d) 700 Wwhy the slip of induction motor is never zero.7- Iron loss in the rotor of a 3-phase induction motor is negligible due to (a) Very low frequency of emf induced in the rotor (c) Very low flux density in rotor parts 8- The starting current of a 3-phase induction motor is about (a) Half (c) 5 to 7 times (b) Twice (d) 8 to 10 times 9- During plugging of an induction motor (a) Phase sequence is reversed (b) A de source is connected to stator (e) One phase is open circaited (d) Power is ied back to mains 10- Direct online (D.O.L.) starter is used for induction motors (a)Less than 5 h.p. (b) Less than 10 h.p. (c) Greater than 10 h.p. (d) For any capacity (b) Very low emf induced in the rotor (d) Constant magnitude of flux linking the rotor core of its full load rated current