A permanent-magnet DC motor has the following specifications:  Motor Armature Supply Voltage = VM = VA = 18 V Motor Armature Resistance = RA = 14 Ω Motor back emf proportionality constant = Kb’ = 1.2 x 10  ̶  3 V/rpm Motor speed = NM = 7000 rpm Find the motor armature current (IA) through the motor armature.

Q: A permanent-magnet DC motor has the following specifications:      Motor Armature Supply Voltage =…

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Q: A shunt motor on a 240- V line has an armature current of 75 A. If the field- circuit resistance is…

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Q: A permanent-magnet DC motor has the following specifications:        Motor Armature Supply Voltage…

A: In this question we have to find out motor armature current with given data.. In

Q: discuss how the dc motor is used in washing machine

A: The answer as given below:

Q: A series motor runs at 700 rev/min when the voltage is 300 V and the current is 20 A. The armature…

A: Initial speed of motor N1=700 rpm. Initial terminal voltage V1=300 V. Armature current Ia=20 A.…

Q: A 230-volt series motor has an armature resistance of 0.32 ohm and a series-field resistance of 0.16…

A: Given: V=230 VRa=0.32 ΩN=500 rpmIa=32 A

Q: 5. A 20KW dc shunt generator delivering rated output at 1000rpm has a terminal voltage of 500 V. The…

A:

Q: 3. The current drawn by a 120 V dc motor with back emf of 110 V and armature resistance of 0.4 ohm…

A: Given information is shown below:

Q: A d.c. shunt motor is running with certain load. For constant torque, the effect of adding an…

A: As per the guidelines of Bartleby we supposed to answer 1st question only since the 2nd question is…

Q: Q1/The Gray code (10110111101)= ( ) in decimal number None of them O 1753 O 869 O 1749 O 931 O 1750…

A: We need to do convert the gray code to decimal number

Q: A dc motor having flux per mole of 0.05Wb, 6 ploes containing lap winding with 600 conductors. The…

A: The data given in the question is: Flux(ϕ)=0.05Wb, P=6, Z=600, N=500rpm, Ra=0.25 ohm, Ia=40A, lap We…

Q: Explain in detail how AC motors develop a rotating magnetic field.

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Q: A four poles d.c Motor with a progressive simplex wave winding, 14 slots , Draw developed diagram…

A: Given that  A four pole dc motor having progressive simplex wave Progressive wave-After completion…

Q: (1) What is the armature current IA for EA= (A-10)V (2) What is new value of EAnew, at C/5 percent…

A: RA=0.25Ω ;VT=A=436 V ;EA1=A-10=426V ;1 IA1=?  for  EA=A-10 C=7, ∴C/5=7/5=1.4% decrease ∴ϕ2=0.986ϕ1 2…

Q: A 220V, four pole, wave wound DC series motor has 1000 conductors on its armature. It has armature…

A: DC machines (Generator/ Motor) are the important parts of electrical drives. These machines are used…

Q: A 240 V, 4 pole wave wound dc shunt motor has 600 conductors on its armature. It has an armature…

A: Given, A DC shunt motor has V=240 VP=4 A=2  wave woundZ=600Ra=0.7 ΩE=210 Vϕ=10 mWb

Q: A 220 V DC series motor runs drawing a current of 30 A from the supply. Armature and field circuit…

A: It is given that:

Q: The armature resistance of a DC motor is 0.4 £2, the supply voltage is 200 V and the back e.m.f. is…

A: Given, A DC motor with, Armature resistance, Ra=0.4 Ω. Supply voltage, Vs=200 V. Back emf, Eb=198 V.…

Q: In a d.c. series motor, the torque developed is 20 Nm at 10 A. If the load current is doubled, the…

A: Given a dc series motor with, Torque developed, τ1=20 Nm. At the current, I1=10 A. When the current…

Q: A 220 V separately excited dc motor takes 20 A and the armature resistance is 1.0 0. If the armature…

A: We need to find out the speed for given motor.

Q: A DC motor has the following specifications: 10 hp, 37.5 A, 230 V; flux / pole = 0.01 Wb, number of…

A: back  emf Eb = flux per pole×speed of the machine×total number of conductors60×number of polesnumber…

Q: 500 V shunt motor has an armature resistance of 0.3 Q and field resistance Of 250 Q. Determine the…

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Q: discuss how the dc motor is used in electric toothbrush

A: Electric toothbrush: It is a toothbrush that uses rapid automated bristle movements, such as…

Q: Q7/ What are the advantages and disadvantages of the permanent magnets dc motors?

A: Permanent magnet DC motors produce a flus that is constant unlike an electromagnetic excited DC…

Q: The relation between armature torque and armature current of a DC motor is Parabolic Linear Inverse…

A: From the DC motor characteristics

Q: A four-pole DC motor has a wave-wound armature with 600 conductors. The armature current is 45 A and…

A: We need to find out the power developed in given machine.

Q: The dc motor has maximum current at start because: O The back emf is maximum. OThe back emf is zero.

A: here we have to find why the dc motor has maximum current at the start.

Q: The current drawn by 220 V dc shunt motor of armature resistance 0.5 ohm and back emf 200 V is

A: Given, A DC shunt motor having Supply voltage, V=220 V Armature resistance, Ra=0.5 Ω Back emf,…

Q: 459. The current drawn by a 460 V dc motor of armature resistance 0.5 ohm and back emf 420 V in

A: Given a dc motor with, Input voltage, V = 460 V. Armature resistance, Ra = 0.5 ohm. Back emf, Eb =…

Q: Q3 A 4-pole, 500 V shunt motor has 720 wave-connected conductors in the armature.The full-load…

A: NOTE: As per our company guidelines we are supposed to answer only one question. Kindly repost other…

Q: Speed control of a 140 V, 1.68 kW DC motor single phase thyristor full wave AC-DC

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: A shunt DC motor is supplied by 520V terminals voltage and is used to supply a mechanical load with…

A: The solution can be achieved as follows.

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.