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

Q: A three phase induction motor rotates at speed of 1455 r.p.m. when its synchronous s 1500 rpm. Find…

A: In this question we need to find a speed of stator with respect to rotor field.

Q: Q5. Which of the following types of 1-phase induction motor has the lower power rating? (a)…

A: Shaded Pole Induction Motor: The motor consists of salient poles and a squirrel cage rotor. A…

Q: • T or F, modify the wrong part if False, please underline twice your answer if True or False.  At…

A: It's a FALSE statement

Q: In an induction motor, rotor runs at a speed O Lower than the speed of stator field O Having no…

A: In this question we will write speed of induction motor rotor..

Q: 6- Which of the following supply is given to the rotor winding of 3-Phase Induction Motor: a) DC…

A: 3 - phase induction motor  problems

Q: The synchronous speed of the three-phase induction motor increases with increasing the supply…

A: Synchronous speed  Ns= (120*f)/P Synchronous speed is depends on supply frequency and poles

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

A:

Q: A three phase star connected six pole induction motor has the following parameters R1=.294 R2=.144…

A:

Q: 1. Slip ring induction motors need maintenance. 2. When the load torque on the induction motor…

A: a)Slip ring induction motors needs maintenance:           Slip ring induction motors needs…

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

A:

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

A:

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: 4. A six pole 60 Hz induction motor has a full-load slip of 4 percent. Find the rotor speed at full…

A:

Q: A three-phase star connected six-pole induction motor has the following parameters. Ri =0.294 n;R1…

A:

Q: QUA) Fill in the blanks: 1. Laminations of core are generally made of..... d. In case of the…

A: As per the policy I have attended first three sub parts of the first question 1) Lamination is…

Q: Q3) I. What' s the effect of The auxiliary winding of split - phase induction motor when it becomes…

A: In this question,  We need to explain the effect of the short winding of the auxiliary winding.…

Q: A 50 Hz, 3-phase induction motor is working at a full load speed of 1440 r.p.m. The number of poles…

A: Full load speed = 1440 f = 50 Hz

Q: A 415V squirrel cage induction motor develops a torque of 40Nm. The torque developed by the motor if…

A:

Q: In induction motor, speed ___ with increase in load. a. decreases b. constant c. as same as d.…

A: We know that the speed of induction motor is inversely proportional to the load. So as the load…

Q: The step angle for a stepper motor drive having 2 number of poles and 75 rotor teeths is.

A: 2 poles means 4 phase. So step angel = 360/4*75=1.2 degree.

Q: If a 4-pole induction motor has a synchronous speed of 1500 r.p.m., then, supply frequency is

A: Given an induction motor with, Total number of poles, P = 4 Synchronous speed, Ns=1500 rpm Supply…

Q: and....* 2. The maXximum torque in an induction motor depends on..

A: Note: We are authorized to answer the first question since the exact one wasn’t specified. Please…

Q: The synchronous speed of the three-phase induction motor decreases with increasing the supply…

A: The given statement is False. The explanation is provided below.

Q: n flux control method the speed of DC motor is obtained O Both above and below base speed O Above…

A:

Q: When the supply voltage to an induction motor is reduced by 10%, the maximum torque will decrease by…

A: Given, The supply voltage to an induction motor is reduced by 10%. V2=0.9V1

Q: The synchronous speed for 60 Hz induction motor can be equal to 3000 RPM. O True O False

A: An induction motor is a self starting motor and it doesn't run at the synchronous speed

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

A: Class C

Q: The torque developed by a dc series motor is 32 N-m when drawing 17 A. If the current is doubled,…

A:

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

Q: Induction motor at standstill condition has the motor speed (nm) and slip (s): Select one: Oa.…

A:

Q: A 415V squirrel cage induction: motor develops a torque of 40Nm. The torque developed by the motor…

A:

Q: An induction motor has a full load slip of 0.04. It's starting current 5 times its full load…

A: Given full load slip = 0.04 ratio of starting current to full load current = 5 .

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: 3.8 An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50 Hz, the emf…

A: we need to deteremine emf in the rotor frequency.

Q: DC Shunt motor, when the load increases Torque decreases. Select one: True False

A:

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: A three-phase star connected six-pole induction motor has the following parameters. R 0.294 ; R…

A: A three-phase star connected six-pole induction motor has the following parameters. R =0.294 ; R…

Q: The impedance of the main winding of a single-phase induction motor is (9+j5) Q. The impedance of…

A: Given data, Zm=9+j5Za=4.5-j10V=120 Vf=60 Hz Now, Current in the main winding is…

Q: A 4-pole induction motor, supplied by a slightly unbalanced three-phase 50 Hz source, is rotating at…

A: Given an induction motor with, Total number of pole, P=4. Frequency, f=50 Hz. Rotor speed, Nr=1440…

Q: The step angle for a stepper motor drive having 10 number of poles and 75 rotor teeths is PEESLN

A: Step angle for the motor  Numbers of the poles = 10 Rotor teethb= 75 Step angle

Q: If the speed of an Induction machine is 100 rad/sec, the speed in rpm is

A: aacording to question we need to calculate the value of speed in rpm from rad/s.

Q: The torque developed by a dc series motor is 16 N-m when drawing 23 A. If the current is doubled,…

A: Given data:

Q: 9. An AC squirrel cage induction motor has a speed o rpm. If the leads were such that they could be…

A: If the leads were such that they could be reconnected for consequent windings then the resulting…

Q: The synchronous speed of the three-phase induction motor decreases with increasing the number of…

A: Synchronous speed = 120×frequency of supplyNo. of stator poles  from above , Synchronous speed is…

Q: At rest condition, the slip of induction motor is 0. Select one: True O True O False In DC series…

A: In this answer we will try to say whether the given statement is true or false and find what happens…

Q: The use of a series capacitor with the auxiliary windings of a single-phase induction motor permits:…

A:

Q: What Rotor type has the Three-Phase Induction Motor used in our sample problem no. 16? Explain and…

A: Given  A sample problem, we need to determine the rotor type used. Please find the answer below.

Q: An induction motor is an example of O stepper motor O asynchronous machine O DC machine O…

A: From given list of motors,  Stepper motor comes under special purpose machine. DC motor and DC…

Q: On increasing the starting torque of the induction motor, the maximum torque is also increased. a)…

A: In an Induction motor the starting torque and maximum torque are independent to each other. The…

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.