How does the saturation in the machine affect the speed of shunt motor?
Q: 1.How does a DC Shunt motor work?
A: As per Bartleby guidelines we are allowed to solve only three subparts only, please ask the rest…
Q: What is the main precaution feature of running the series-wound dc motor Explain with the aid of…
A: The series-wound motor has poor speed regulation as compared to other DC motors. When the shaft of…
Q: 6. A shunt generator when running light as a motor at 1000 rpm takes 12 Amp from 115-Volt mains. The…
A:
Q: A 440 V d.c. Armature resistance of shunt motor is 0.25 Ω and field winding resistance is 220 Ω. A…
A: Solution: Given data; V =440 v, Armature resistance Ra=0.25 Ω, shunt resistance Rsh=220 Ω, Load…
Q: Why not self starting induction motor?
A: Induction motor- An induction motor is an electric motor that works on the method of electromagnetic…
Q: What type of speed control method provides above the normal speed of the DC series motor? O a.…
A: Find method for above speed
Q: 6- If a D.C. shunt motor is working at no load and if the shunt field circuit suddenly opens (a)…
A: The answer is option c.
Q: a) Explain about the stator, rotor and carbon brush used in of AC motor.
A: For the above given question we need to define rotor, stator and carbon brushes used in AC motor.
Q: A 6-pole dc generator is running at 1200 rpm. What is the frequency of current in the armature…
A: Given; DC generator with Number of poles P=6 Synchronous speed Ns=1200 rpm
Q: Why small voltage is built up immediately in rotating shunt machine eve without field excitation?
A: For every self excited generator there must exist some residual flux . When armature rotates…
Q: a 220 V DC shunt motor takes 3 A at no-load. It draws 25 a when running at full load at 1500 rpm.…
A: Diagram of dc shunt motor is drawn in below figure, From diagram field current is equal to, At no…
Q: What is the difference between Self Excited and Separately Exited DC motor?
A: In Self excited DC motor, the current required to generate flux in field winding is supplied by the…
Q: In a compound DC motor, why does the speed decrease by increasing the torque (the same voltage…
A: Torque and speed are inversely proportional. This is because the ability to generate torque…
Q: What are some ways to test the strength of a vibration motor?
A: Vibration Motor- Vibration motors are those motors in which the unbalance condition is intentionally…
Q: Synchronous motor when the load is taken completely while working at full load in all properties…
A: Synchronous motor is constant speed motor always rotates at synchronous speed Ns =120fP
Q: Question 9 What factors affect the torque of a dc motor? (Select all that applies) A) Number of…
A: As per our company guidelines we are supposed to answer only first question kindly repost other…
Q: what is the effect of armature reaction in on the speed of the motor?
A: The solution can be achieved as follws.
Q: . a)Briefly explain ‘armature reaction’ and its effect with the help of a suitable diagram.…
A: Armature reaction is the effect that armature field is made in main field. Or we can say that it is…
Q: what is dc shunt and series motor?
A: Motor is an electrical machine which converts the electrical energy into mechanical energy. DC motor…
Q: A 230 volt shunt motor runs at 800 rpm and takes an armature current of 50 amperes. Find the…
A: In a DC shunt motor when the flux generated by the field winding is proportional to the current in…
Q: The armature of a 4-pole, 136 slots shunt generator is lap wound with four conductors per slot. The…
A:
Q: 1. Why is DC Motor current so high? 2. How can we reverse the direction of rotation of a DC motor?…
A:
Q: (а) Explain the three (3) main differences between AC and DC motors?
A: AC motors :- Alternating current DC motors :- direct current motors. Here we are explaining 3…
Q: Why does the motor current increase as the load increases? What happens to the voltage falling due…
A: There is a series of field current in the motor, and the armature current is equal to the load…
Q: What two benefits do reactors in motors have?
A: Two benefits of reactors in the motor is given below: 1)Reactors protects, motor and its control…
Q: The armature torque of a d.c. motor runing at 800 rpm is 99.3 Nm and shaft torque is 93.3 Nm. The…
A: Given a dc motor having, Running speed at, N = 800 rpm Armature torque, τa=99.3 Nm Shaft torque,…
Q: A 4 pole, 500V shunt motor has 720 wave connected conductors on its armature. The full load armature…
A: The solution is given below
Q: A 230 V dc shunt motor runs at 800 rpm and takes armature current of 50 A. Find resistance to be…
A: Given data : Supply voltage Vdc=230V Speed of motor N1=800rpm Armature current ia1=50A Speed of…
Q: Q2/ A/ What will happen to torque if back emf and speed of the DC motor is doubled, and why?
A: As per Bartleby guidelines we are allowed to solve only one question,please ask the rest again. The…
Q: How universal motor can be run on AC and DC supply ?what are the material used in the universal…
A: A universal motor is a series-wound motor — meaning that the field and armature windings are…
Q: - In speed control of dc shunt motor, the armature voltage drop has the great effect on speed
A: Speed of the dc shunt motor is directly proportional to back EMF of the motor if there will be…
Q: When a series dc motor is operated without a load, which of the following conditions occurs? The…
A:
Q: Why Hysteresis Losses of DC motor is constant? O a. It depends on load O b. none of the above O c.…
A: The explanation is as follows.
Q: What types of motors contain brushes and a commutator? What is the function of these parts?
A: The kind of motor which contains brushes and commutator are DC motors.
Q: 1. Describe the constructional features and characteristics, of a induction motor that would be used…
A: Note: As per our policy, I have attempted the first question.
Q: - In speed control of dc shunt motor, to increase the speed above the rated value: a) Armature…
A: Back EMF, Eb, of a dc motor is given ny the following equation, Eb = PØNZ/60A where, P = no. of…
Q: what is slip ring induction motor ?
A: Slip ring induction motor: This particular type of motor has some rings connecting its exterior…
Q: Vt= Mains voltage Vt= 1027 Volts When a shunt motor with an armature resistance of 6 Ohm and a…
A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…
Q: What are the advantages and disadvantages of air motors?
A:
Q: Justify with suitable diagrams why reluctance motor is termed as variable torque motor and…
A: The reluctance motor has basically two main parts called stator and rotor. the stator has a…
Q: 5. How does the saturation in the machine affect the speed of shunt motor?
A: We can find that how the saturation in the machine affect the speed of the shunt motor by the speed…
Q: A 6-pole, 1750 rpm shunt motor has a lap wound armature with 580 conductors. If the flux per pole is…
A:
Q: A 250 V DC shunt motor runs at 950 rpm and takes a line current of 55A.Find the resistance to be…
A: Back EMF is directly proportional to product of speed and flux. Back EMF= Terminal voltage +armature…
Q: When a series dc motor is operated without a load, which of the following conditions occurs? * O The…
A: It is known that for DC series motor load decides the amount of armature current .when load of motor…
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- What type of speed control method provides above the normal speed of the DC series motor? O a. Armature control method O b. Armature resistance control O c. Field diverter O d. Flux control methodJustify with suitable diagrams why reluctance motor is termed as variabletorque motor and hysteresis motor as constant torque motor.P-1).. Which of the following determine the amount of torque produced by a single-phase split-phase motor? a) The strength of the magnetic field of the stator b) The strength of the magnetic field of the rotor c) The phase angle difference between the current in the start winding and the current in the run winding d) all of the above P-2). The phase angle difference between the currents in the start winding and run winding of a single-phase split-phase motor is typically 90 degrees. a) true b) false P-3). A centrifugal switch is used to disconnect the________ winding of a non-hermetically sealed single-phase split-phase motor at approximately 75% of rated speed. a) run b) start c) either "a" or "b" d) neither "a" nor "b" P-4). Where an internal centrifugal switch cannot be used, an external______ relay can be used to perform the same function in a single-phase split-phase motor. a) hot-wire b) current c) solid-state starting d) all of the above
- What are typical applications of synchronous motors?A 240 V shunt motor has an armature current of 15 A when running at 800 rpm against full-load torque. The armature resistance is 0.6 ohm. What resistance must be inserted in series with the armature to reduce the speed to 400 rpm at the same torque? What will be the speed if the load torque is halved with this resistance in the circuit? Assume the flux to remain constant throughout.Why small voltage is built up immediately in rotating shunt machine even without field excitation ?
- 250 V d.c. Shunt motor has an armature current of 20A when running at 1000 r.p.m at full load. The armature resistanc is 0.5 ohm. What resistance must be inserted in series with the armature to reduce the speed to 500 r.p.m. Assume load torque constant and magnetization curve to be linearneed asap A dc series motor runs at 1000 rpm when taking 20-A at 200-V. Armature resistance is 0.5-ohm. Series field resistance is 0.02-ohm. Find the speed for a total current of 20-A when a diverter resistor of 0.2-ohm is used across the series field. Flux for a field current of 10-A is 70 % of that for 20-A.1. a) Explain the internal structure of an threephase induction motor. b) Explain the reason that conductor bars of the rotor are placed inclined with respect to the horizontal axis. c) Explain the meaning of the slip rate. d) What is the difference of the wound rotor three phase induction motor. For what purpose is it used? e) Explain the losses in an three phase induction motor. f) Explain the locked motor torque. g) Explain the pull up torque. h) Explain the breakdown torque. i) Explain the rated(nominal) torque.