3.The armature of a 4 pole DC motor carries 314 conductors which are connected. for an armature current of 20 A. the torque produced has to be 50 N-m. Determine the required flux per pole.

Q: What are the following statements are true for DC Motor? I. Motor converts Mechanical Energy to…

A: Motor converts electrical energy to mechanical energy.  Only I is false remaining true

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

A:

Q: 90%. Select one: a. Not on the list b. 100 N-m c. 120 N-m d. 178 N-m

A: Given data: Output Power= 25hp (18.65kW) Speed, N= 1000 r/min

Q: A long compound DC generator feeding a load of current 100 A, at a voltage of 230 V. Calculate the…

A: Given: Current, IL=100A, Resistance, Ra=0.04ΩRsh=115ΩRse=0.01Ω Voltage, V=230V

Q: A- A d.c. series motor draws 22 A from a 240 V line while running at 840 rpm. It has an armature…

A:

Q: DC series motor

A: For the DC series motor, Ise=Ia =Ia   Flux, conductor, poles, armature resistance values given in…

Q: EA5 kW, 200 V dc shunt motor has armature resistance of 1 ohm and shunt field resistance of 100 ohm.…

A: According to the question we have to find the value of the total copper loss.

Q: There may be more than one answe

A: Basically electric generator is a device that converts mechanical energy into electrical energy.…

Q: The intermediate between mechanical energy and electrical energy in electrical machines is... a) A…

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Q: A 8-pole d.c. motor has a wave-wound armature with 870 conductors. The useful flux per pole is 46…

A: According to the question we have to calculate the value of Torque.

Q: c) The O.C.C. of a DC shunt generator running at 300 rpm is as follows. 4 6. 7 Ir (A) Eo (V) 2 92…

A: It is given that: N=300rpm OCC Table:

Q: A dc motor has an electrical power of 150W, speed of w=30rad/s, and a torque of 3N-m. The efficiency…

A: given Input power= 150W w=30 rad/sec torque,τ=3 N-m

Q: A 14 kW, 160 V DC series motor is being supplied by a feeder with total resistance of 0.02 ohms and…

A:

Q: A d.c. series motor connected to a 235 V supply takes 43 A at 950 r.p.m. The armature resistance is…

A: Given: DC series motor To find:

Q: Calculate the losses in the machine and its efficiency if the power input is 18,000 watts, under…

A: To find the losses in the machine and it's efficiency Given : power input = 18000 watts  And output…

Q: 4. The back e.m.f. in a d.c. motor ... . the applied voltage and when it is equal to applied voltage…

A: Answer 4. The back e.m.f in a d.c. motor opposes the applied voltage and when the back emf is equal…

Q: A 4-pole series motor has 800 lap connected armature conductors. At a certain load, the flux per…

A: In this question , we will find line current of motor and speed of motor..

Q: Q1 (a) the following figures refer to the magnetization curve of a d.c. series motor running on no…

A: Since there are multiple questions uploaded within the same question, thus solving the first…

Q: The field and armature resistances of a 220-V series dc motor are 0.2 ohms and 0.1 ohms…

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Q: DC motor's magnetic field gets stronger with an increase in mechanical load?

A: DC Machine  A DC machine is nothing but a synchronous machine plus a commutator. DC…

Q: A 240 V series motor takes 40 amperes when giving its rated output at 1500r.p.m. Its resistance is…

A:

Q: A 440V, 4-pole, lap-wound DC series motor has 510 conductors in its armature. It has a combined…

A: Given data, Number of conductors Z = 510. Number of poles P = 4. Armature resistance Ra=0.5 Ω.…

Q: A DC motor r The copper lo Find the Powe torque is indu

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Q: Calculate the torque in newton-metre developed by a 440 V dc motor having an amature resistance of…

A: GivenTerminal voltage V=440 vArmature resistance ra=0.25 ΩSpeed N=750 rpmArmature current Ia=60 A

Q: Ashunt-wound DC motor with the feld coils and rotor connected in parallel (Figure 1) operates from a…

A: From the DC shunt motor equivalent circuit

Q: A 33 kW, 157 V DC shunt motor has an armature and field resistance of 0.01 ohms and 54 ohms…

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Q: A DC motor rotating at 1800 RPM with 180 Volts and 48 Amp line current. The copper losses were…

A:

Q: In a 6-pole DC machine, 90 mechanical degrees corresponds to how many electrical degrees? (a) 270…

A: Given a DC machine has, Total number of poles, P = 6 Mechanical degree, θm=90°

Q: A 220V do motor developing 25 hp (18.65 kW) runs at a speed of 1000 r/min.. Calculate the torque in…

A: Given data, Output power P0=18.65 KW. Speed N = 1000 rpm.

Q: 1. Compare the reaction of Dc motor and dc generator. Also explain rule by which DC generator/motor…

A: The effect of the armature flux on the main field flux is known as armature reaction. It causes very…

Q: A100 Volt dc series motors run at 400 rpm when taking a current of 55 Amp. Armature resistance is…

A:

Q: 22) What type of conversion is happening in a DC Motor.   a. DC electrical energy to mechanical…

A: A (DC) motor is a type of electric machine. It converts dc electrical energy into mechanical energy.…

Q: A 300V DC motor is running at 1600rpm taking a current of 40A. The armature reisistance is 0.5Ω. Due…

A: Given data: Supply voltage, V=300 V Sheet of motor, N=1600 rpm Armature current, Ia=40 A Armature…

Q: 1.9 A series motor has an armature resistance of 0.2 ohm and a series field resistance of 0.3 ohm.…

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Q: 1.4 A dc series motor draws 300 A from a 750 V supply when deliveri at 950 r/min. The field and…

A:

Q: A 220 V shunt motor has an armature resistance of 0.4 ohm and field resistance of 140 ohm. The motor…

A: We have an shunt motor which is having, Voltage (V) = 220 V Armature resistance (Ra) = 0.4 Ω Field…

Q: A long compound DC generator feeding a load of current 100 A, at a voltage of 230 V. Calculate the…

A:

Q: A 4 pole, 300 V Series Wound  DC Motor developing 25 HP and 81.57 N-m torque runs at a speed of 750…

A:

Q: 3. Which of the following statements IS NOT CORRECT ? * for two motors with equal output power,…

A: Motor: It is an electromechanical device. this takes the electrical input and converts this power…

Q: 7.  A 4-pole, d.c. shunt motor has a flux per pole of 0.04 Wb and the armature is lap-wound with 720…

A:

DC Series Motors

A DC motor is a type of electric motor which converts electric energy into mechanical energy. The forces that are produced by the magnetic field are what those common types of motors rely upon. Either electro-mechanical or electronic, all types of DC motors have some internal mechanism to change the current direction in part of the DC motors. As the DC motors could be powered from existing DC lighting power distribution systems, these motors were the first form of motors widely used. By changing the strength of the current in its field winding or by using a variable supply voltage, the speed of the DC motors can be controlled over a wide range.