How rotor winding is derived the power in the three-phase induction motor? O a. from Single phase supply O b. from stator winding O c. None of the above O d. from slots
Q: Which type of motors are not self-starting? Select one: O a. DC Generator O b. Single Phase…
A: At the point when single-stage AC supply is given to stator winding. It produces rotating flux. i.e.…
Q: B: Compare between split-phase and the shaded pole motors.
A: According to the question we have to explain the comparison between the split-phase and the shaded…
Q: 3. A 4-pole wound- rotor induction motor has a Wye connected stator and a Delta connected rotor with…
A: The solution for induction motor is shown below .
Q: 1. The distance of air gap between stator and rotor range from ------- to depend on Motor's power.…
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Q: why the starting torque of a three-phase wound-rotor induction motor is higher per amperage than…
A: Squirrel Cage rotor:- It Consists of a Cylindrical Laminated Core with a slots nearly parallel to…
Q: A-3-phase induction motor is required to be operated at about 700 rpm. What will be the number of…
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Q: Capacitor-run motor has better power factor while running but it has low starting torque, why?
A: A capacitor run motor has two capacitor, out of which C1 (run-capacitor having 2 to 2.5 micro farad)…
Q: (a) Write four disadvantages of stator voltage speed control method of 3-phase Induction motor. (b)…
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Q: Q4: a) In the experiment of performance study of three-phase wound rotor induction motor, what are…
A: Approximate Equivalent circuit diagram of wound rotor induction motor is given by Where V is the…
Q: 8- The DC test for three phase induction motor determines (a) Rotor resistance(R2) (b) Stator…
A: Dc test means connect any two stator terminal to a variable dc source and connect a voltmeter in…
Q: Question 1: A 3-phase, 4 pole, 50 Hz induction motor has a slip 1% at no load and 3% full load…
A: The solution is given below
Q: Which type of motors are not self-starting? Select one: O a. DC Generator O b. Single Phase…
A:
Q: Explain why single phase Induction motor is NOT self-starting?
A: Single phase Induction motor is also known as Fractional HP and Fractional KW motors. Single phase…
Q: Select which of the following winding of Synchronous motor requires AC power supply. O a.…
A: Choose the correct option The winding of synchronous motor require ac power supply ?
Q: E-a). Which of the following is/are a type of single-phase multi-speed motor? a) consequent-pole…
A: According to guidelines we need to solve only the first question. According to the question, Which…
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 stator core of a three phase 1 point induction motor is laminated to reduce * stray load loss…
A: To reduce the eddy current loss, the stator core is laminated & these laminated types of…
Q: Describe the Torque-Slip characteristics of a three phase induction motor
A: The torque-slip characteristics of a three phase induction motor are drawn by taking slip on X-axis…
Q: Q3)discuss two only : a) the magetising current (Im) of 3-phase motor b) how will you design the…
A: Solution: In the given question, we need to discuss any of the two parts and hence we will discuss…
Q: 50. A) The rotor conductors of the 3-phase double-squirrel-cage induction motor are used during the…
A: A. The rotor conductors of the 3-phase double-squirrel-cage induction motor are used during the…
Q: Write four disadvantages of stator voltage speed control method of 3-phase induction motor
A: Stator voltage speed control method: It is the speed control of 3-phase induction motor by…
Q: 19. What effect does slip have on rotor reactance of a 3-phase squirrel-cage induction motor? a)…
A: ROTOR: Based on the rotor construction, the induction motor is classified into Squirrel cage…
Q: Explain frequency control of 3 phase induction motor from voltage source with constant maximum…
A: According to the question we have to explain frequency control of the 3phase induction motor from…
Q: Phase 1 Stepping Sequence (full- stepping) for a Two-Phase PM Stepper Motor with Two Rotor Poles…
A: In the question we can four individual cases for four different states of two phase. Each phase has…
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: 23 A 50 Hz split-phase induction motor has a resistance of 50 and an inductive reactance of 200 in…
A: In this question, We need to determine the value of resistance R and capacitance C are connected in…
Q: Which type of motors are not self-starting? Select one: O a. DC Generator O b. Single Phase…
A: The objective is to determine the correct option for the motor which is not self starting.
Q: in Speed Control of Three Phases I.M. by Variation of Rotor Resistance Give a comparison among…
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Q: A) Which of the following is/are a part of a 3-phase induction motor? a) stator b) rotor c) both "a"…
A: Problems based on induction motor
Q: 4) It is advisable to avoid line-starting of induction motor and use starter because: A. motor takes…
A: 4. At starting slip is 1 , so rotor impedance is very very less . So , if we apply such a line…
Q: A three-phase 60-cycle six-pole 220V wound-rotor induction motor has a stator that is connected in…
A: Given : Supply frequecny = 60 hz no. of poles (P) = 6 Supply voltage = 220 V Rotor speed = 1110…
Q: While starting a synchronous motor by induction motor action, field winding is. usually Connected to…
A: we have damper winding on rotor surface to avoid oscillations and to start the synchronous motor .…
Q: 2-The speed of a slip-ring induction motor cannot be controlled by: (a) Rotor resistance control.…
A: B)pole changing method We can control the speed of induction motor with help of rotor resistance and…
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 frequency of the supply to the stator of a 4-pole induction motor is 60 Hz and the rotor…
A: Speed is calculated as given below
Q: A three phase 6 pole , 50 Hz induction motor has a slip of 1 % at no load and 3% at full load. Find…
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Q: a) the magetising current (Im) of 3-phase motor b) how will you design the rotor of a squirrel cage…
A: Electrical machines can be either generators or motors. They can be either Ac machines or DC…
Q: The rotor of a 50 Hz, 4 pole synchronous motor is directly coupled to rotor of 50 Hz, 6 pole…
A: Given- 50 Hz, 4 pole synchronous motor, 50 Hz, 6 pole induction motor. To Find- The value of a…
Q: Q-2:- A30, 460 V, 100 hp, 60 Hz, four-pole induction motor delivers rated output power at a slip of…
A:
Q: A 3-phase 440V, wye connected induction motor has a star-connected stator and delta connected rotor…
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Q: B/ Fill in the blanks: 1- In a three-phase induction motor iron losses in stator will be .. that in…
A: B 1- In a three-phase induction motor iron loss in the stator will be more than in the rotor. Since…
Q: (b) A three-phase, 50 Hz, six pole induction motor runs at a no-load speed of 915 r/min. and…
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Q: Discuss why the starting torque of a three phase wound rotor induction motor is higher per amperage…
A: Discussion is why starting torque of 3 phase wound motor is greater than squirrel cage induction…
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: If the star-connected rotor winding of a 3-phase induction motor has a resistance of 0.0192per phase…
A: It is given that : R=0.01 ΩphX=0.08 Ωph
Q: A 11 Hp, 4-pole, 60Hz, 3-phase induction motor is taking 10,87 watts from the line. Core loss is 347…
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Q: 1- To control the speed of an induction motor, the supply frequency is reduced by 10%. For the same…
A: Given, To control the speed of an induction motor, the supply frequency is reduced by 10%.
Q: IDENTIFY TWO WAYS IN WHICH THE OUTPUT POLARITY OF A SHUNT DC GENERATOR CAN BE CHANGED.
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Q: 24/ The resistance and standstill reactance of each phase of a 3-phase induction motor with star-…
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- 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 turnWhat are the similarities and dissimilarities of a 3-phase induction motor and a transformer?1- The compole is used to 2- A 4-pole wave winding machine has ------ magnetic circuit. 3- A commutator pitch for the duplex wave winding is equal to - 4- A 2-pole triplex lap winding will have parallel paths. 5- A 6-pole lap wound generator has 900 conductors. The e.mf induced per one turn being 3V. the generated voltage of the grnerator is ( 6-A 10kW, 250 V shunt generator has armature and field resistance of 0.2 and 502 respectively. Then the generated voltage is and
- T-a. The direction of rotation of a single-phase split-phase motor can be change by........ a) reversing the connection of the start winding b) reversing the connection of the run winding c) reversing the connection of the start and run winding at the same time d) "a" or "b", not "c" T-b. Single-phase split-phase motors using an electrolytic capacitor in the start winding circuit should not be cycled more than about__________ time per hour. a) 8 b) 12 c) 24 d) none of the above T-c. When replacing the capacitor in a capacitor-start induction-run motor, one must be sure to replace the bad capacitor with__________ . a) a smaller one b) one of the same size c) a larger one d) none of the above1. Write down some advantages and disadvantages of different connections of three-phase transformers . (Write mainly for delta-delta, wye-wye, wye-delta and delta-wye)2. What is skew effect? Why is it important for the rotor of an induction motor?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
- 1.Two identical shunt generators running in parallel, each with armature resistance of 0.02 ohms and field resistance of 50 ohms. The combined load current is 5000A. The field are so excited that the generated voltages of one machine is 610V and the other is 600V. The terminal voltage of this parallel combination will be. www Ish1 Rh1 a.350-360 V b.450-460 V c. 550-560V Rat www az G₂ Raz 5000 A Ish2What are the main parts of an single phase induction motor? Explain the function Jeach,Here it is the equivalent circuit of and induction motor and it is per phase circuit my question is name for me the variable for example R1 is the winding resistance and so an the all variable and please show me a pic of the real machine with the variable for example for R1 happens because of the winding i need to see the winding in the real machine, please help me to understand well