In speed coontrol of dc motor, the tachogenerator is used as control unit. Select one: O True O False
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: DC series motor should strat with load. Select one: O True O False
A:
Q: ) "DC series motor is used in heavy starting duty appliances"- prove this statemer mathematically.
A: Solve the problem
Q: Type of motor best suited for dynamic performance requiring applications is O slip ring induction…
A: Type of motor best suited for dynamic performance requiring applications is, a. slip ring induction…
Q: The speed of dc shunt motor varies with
A:
Q: 1) Explain why we fixed the ratio of V/f in experiment to control the speed of three phase induction…
A: if we decrease frequency flux increases but at the same time if we decrease voltage flux will also…
Q: (C)- Draw the mechanical characteristic of shunt and series DC motors.
A: DC series motor: The armature & field windings of series DC motor are connected in series with…
Q: 4- For satisfactory performance of 3-phase 480V, 60 Hz induction motor, the supply voltage at 50 Hz…
A: Note: As per the company policy, we experts are allowed to answer only one question. Kindly post the…
Q: Which type of motors are not self-starting? Select one: O a. DC Generator O b. Single Phase…
A:
Q: - Draw the mechanical and electrical characteristics for shunt and series motor
A: Shunt Motor is a "winding-field DC motor" that generates magnetic field flux using electromagnets.…
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: Field divertor method of speed control in DC series motor is used for (estimated time 1 minute) a.…
A: In this question, Choose the correct option Field divertor method of speed control in DC series…
Q: The starting torque of slip ring induction motor is O Low O Negligible O High O Medium
A:
Q: 2. A separate excited motor with PN 18kW UN 220V, IN-94A, n№=1000rpm, Ra=0.150, calculate: (a) Rated…
A: Given A separate excited motor with PN-18kW, UN 220V, IN-94A, n=1000rpm, Ra=0.150, calculate: (a)…
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: When a cumulatively compounded long shunt DC motor is run as a generator, it will operate also as a…
A: Based on the arrangement of windings we will find statement is true or false.
Q: discuss a) the magetising current (Im) of 3-phase motor b) how will you design the rotor of a…
A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…
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: the speed of a DC servo-disc motor can be varied by adjusting the aplied voltage's amount of off-or…
A: Yes. The given statement is true. The speed of dc servo motor varies with magnitude of the…
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: P- 2000VA induction motor with a power factor of 0.8 lagging in parallel with a 500VA synchronous…
A: The solution can be achieved as follows.
Q: 4. A 3 phase,60HZ ,6 pole induction motor has a full load slip of 5%. The rotor resistance is…
A: To find the speed of the induction motor at which maximum torque occurs
Q: The 3-phase squirrel-cage induction motor has a poorer starting torque than might be expected based…
A: Solution: Torque of an induction motor depends on rotor reactance and rotor resistance. Torque of an…
Q: 25: For a three-phase induction motor, explain briefly the following with mention the necessary…
A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…
Q: 5. Which type of DC motor should be used if constant speed is needed? series shunt induction…
A: In this question, We need to choose the correct option Which motor is used for constant speed?
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 dc shunt motor, the speed is inversely proportional
A: The relation of back emf generated in D.C. motor is given as, Here, k is the proportionality…
Q: (V/F) speed control can be adopted in wound rotor induction motor?* True- O Páise,
A: V/F control is an induction motor control method which ensures the output voltage is proportional…
Q: (b) State the starting problem in DC motors and the associated risks. Suggest two solutions to…
A:
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: Discuss the difference between D.C shunt motor and D.C series motor at load.
A: DC SHUNT MOTOR DC SERIES MOTOR 1. Speed is fairly constant 1. Speed is variable 2. no load…
Q: 5. Which part (s) of the DC motor connect the power supply to the split- ring and coil? * O a)…
A: → At the armature has armature conductors and armature providing houring for…
Q: The frequency of emf in the stator of a 4 pole, 3 phase induction motor is 50 Hz and that in the is…
A: In this question we will find slip and speed of motor....
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: (V/F) speed controt can be adopted in wound rotor induction motor? Hue, False
A: In any three phase induction motor, there are two main parts which are stator and rotor. The stator…
Q: The speed regulation of DC series motor is lesser than the DC shunt motor True False 200
A: The speed regulation of DC series motor is very high around more than 35% The speed regulation of DC…
Q: What is the possible operating power factor of a synchronous motor if it takes less value of DC…
A: Choose the correct option Operating power factor of a synchronous motor if it takes less then value…
Q: For A DC motor with speed regulation SR-5 %-(0.05), the full load speed :N.fl=1500 r.p.m, the no…
A: Given: A DC motor with Speed regulation, SR=5%=0.05 Full load speed, Nfl=1500 rpm
Q: We make( V/F) constant in speed control of three-phase induction motor in order to make motor torque…
A: SPEED CONTROL OF 3-PHASE INDUCTION MOTOR:- Variable frequency control: The Synchronous speed of an…
Q: In the DC Shunt motor, when the load increases Speed decreases. Select one: O True O False
A: True
Q: The speed control of shunt motor is N = (V- laRa)/O. Select one: True False
A:
Q: The core of a simple de motor is shown i
A: NOTE- “Since you have asked multiple questions, we will solve the first question for you. If you…
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: Use a detailed diagram to illustrate the 4-quadrant operation of a DC motor, where forward motoring,…
A: There are four modes of operation of dc motor which are forward motoring, forward braking, reverse…
Q: The nature of the graph between the speed and field current of DC shunt motor is O Linear O Straight…
A: In this question we will find relation between speed and field current of dc shunt motor...
Q: e) The only efficient way to control the speed of series motor is to adjust its terminal voltage.…
A: The solution is given below
Q: ...has more initial torque than shunt dc motor.
A: We have four types of motors available in DC. Shunt, seris, cumulative and differential dc motors.
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Solved in 2 steps
- a) Compare the squirrel cage asynchronous motor with the asynchronous slip ring induction write it with computer please11. Armature copper loss of DC motor is constant with the load. Select one: True Falseelectrical machines (How does an asynchronous motor behave when there is a load?) explain by drawing an experiment connection diagram. the loaded experiment of induction motor (asynchronous motor) after that Briefly explain the loaded operating characteristic by drawing.
- Which dc motor is used in fan??(be quick)1-) a) Does the slip increase as the load increases in an asynchronous motor? Explain what is the reason for this. b) What does it mean when the slip is 0, 1, -1 in asynchronous motor, how is it achieved? Explain.electrical machines (((How does an asynchronous motor behave when there is a load?))) this is what i want read the equestion down explain by drawing an experiment connection diagram. the loaded experiment of induction motor (asynchronous motor) after that Briefly explain the loaded operating characteristic by drawing.
- Thanks in advance. Please answer this question by explaining the each step and reasoning why u used that method or formula. By the way, this question is related to electromechanical energy conversion lecture. The no-load and locked-rotor test results of a three-phase 10 HP, 220 V, 60 Hz, 6 poles star connected induction motor are; The no-load test: VNL=220 V, PNL=340 W, INL=6.2 A The locked-rotor test: VSC=54 V, PSC =430 W, ISC =15.2 A The voltage across the stator windings is 2 V when nominal DC current flows through it. Coefficient for DC resistance is 1,25. a) Calculate the equivalent circuit parameters and draw the complete single-phase equivalent circuit of the induction motor. b) Calculate efficiency of the motor for s=0.06 by using the approximate equivalent circuit (RFe core resistance is not ignored). c) Shaft torque for s=0,06 d) Slip value at the maximum (breakdown) torque, e) Maximum (breakdown) torque of the induction motor. f) Speed of the motor at maximum torque point.…The speed regulation of DC series motor is lesser than the DC shunt motor True FalseReview/Explain with the aid of sketches the following excitation methods for a synchronous motor. DC EXCITATION, DC BRUSHLESS, AC EXCITATION.
- Please Explain the Following 1 How a DC motor works? 2.Compare and contrast DCgenerator and DC motor? 3. What is back emf?Q4. 1- What is the main function of a diverter used in series wound DC motor? 2- What is the main difference between (iron and friction losses) and copper (Cu) losses in DC generators?In an asynchronous motor, why does the motor slip value increase as the torque value increases? (explain verbally)
