The 200 V shunt motor has an input and output powers of is 35 and 32.5 Hp respectively. The field and armature circuit resistances are 39 Ohms and 0.015 Ohm respectively. Determine the efficiency of the motor if the output power is reduced to 14 Hp.

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 400 V series motor has a field resistance of 0.02 ohm and an armature resistance of 0.1 ohm. The…

A: Given : A 400 V series motor field resistance = 0.02 ohm and an armature resistance = 0.1 ohm. The…

Q: A 440-V shunt motor has armature resistance of 0.9 Q and filed resistance of 1800. Determine the…

A: Given, A shunt motor has, Terminal voltage, V=440 V Armature resistance, Ra=0.9 Ω Field resistance,…

Q: Speed control of a 140 V, 1.68 kW DC motor şingle phase thyristor full wave AC-DC It is made by the…

A: Given details are Motor is permanent magnet DC motor. It is controlled by single phase full wave…

Q: Find the starting current (in Ampere) of 146 V DC series motor if the armature resistance = 0.6 ohm…

A: armature current of DC series motor=(terminal voltage -back emf)armature resistance+ series field…

Q: OV DC series motor takes the line current of 30 A and runs at 750 rg d if torque is increased to 50…

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Q: A 1200 rpm, 700V Series DC motor has an armature resistance of 20 and the field resistance of 90. If…

A: efficiency = output powerinput power = input power - lossesinput power input power to motor =…

Q: A DC shunt motor produces an output power of 4.8 kW on the shaft with a speed of 1120 rpm and a…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A 400-V shunt motor has armature resistance of 0.9 ohms and field resistance of 200 ohms. Determine…

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Q: A 440-V shunt motor has armature resistance of 0.9 and filed resistance of 180 Q. Determine the back…

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Q: A 220 V shunt motor has armature and field resistances of 0.5 Q and 220 Q respectively. Initially,…

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Q: Find the number of resistance sections and the resistance of each section of a starter for a 3.7 kW,…

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Q: A 280 V shunt motor has an armature resistance of 0.3 Q and field resistance of 115 Q. At no load,…

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Q: 2. A 110 V shunt motor has a field resistance of 55 ohms and armature resistance of 0.1 ohm. The…

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Q: If the losses of the armature wingdings of dc motor which is running at 1200 RPM is neglected and…

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Q: The adjacent figure represents the load test of a DC shunt motor. The voltmeter (V₁) indicates a…

A: As per guidelines given to us, we can only provide the solution of first three subparts but here we…

Q: A separately excited dc motor operates at a rated terminal voltage of 240V. It has a total armature…

A: Given: Ia=35 A, Ra=0.22 Ω, kn=0.22, V=240 Volts. Required: Motor speed.

Q: A 48kW, 600V, 1500 rpm separately excited de motor is controlled by single phase semi-controlled…

A: Armature resistance (Ra) = 1 Ω         Field resistance (Rf) = 145 Ω        Firing angle of…

Q: A 200 V dc motor takes 50 A in series and is operating at a speed of 1000 rpm when full of…

A: Given, A dc motor with, Terminal voltage, V=200 V. Armature current, Ia=50 A. Operating speed,…

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 220V. dc series motor is running at a speed of 800 rpm and draws 100 A. Calculate at what speed…

A: It is given that: Vt=220 VN==800 rpmIa=100 ARa+Rse=0.1Ω

Q: . In a dc shunt motor, the shunt field resistance is 100 ohms and the armature resistance is 0.01…

A: The speed of the DC shunt motor is inversely proportional  to flux. The flux is  directly…

Q: A 55 hp, 440 V, 400 rpm DC shunt motor draws 107 A when operating at rated conditions. The motor has…

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Q: Q2- What is the Working Principle of DC Servo Motor

A: The  precise control of motor in terms of position of angle of the rotor, acceleration and velocity…

Q: At100 volts, a shunt motor is taking 250 amperes. Shund field resistance is 20 ohms and armature…

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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: A 230 V shunt motor has a nominal arma- ture current of 60 A. If the armature resist- ance is 0.15 ,…

A: The shunt motor is rated for 230 Volts.  The armature current is 60 A.  a. The counter emf is,…

Q: 41. If the current in the armature of d.c series motor is reduced to 50%, the torque of the motor…

A: Given: For a dc series motor, Case 1: Armature current, Ia1=Ia Torque, T1=T Case 2: Armature…

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

A: Given data, Terminal voltage V = 240 V. Armature current Ia=75 A. Field circuit resistance Rsh=100…

Q: The power input to a 500 V, 50 Hz. 6-pole. 3-phase induction motor running at 975 RPM is 40 kW. The…

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Q: he current drawn by the a 230 V DC motor of armature resistance 0.5 Ω and back emf 200 V is ?

A: Given: Terminal voltage, V = 230 V. Armature resistance, Ra=0.5 Ω. Back emf, Eb=200 V.

Q: A DC series motor of resistance 1 ohm across terminals runs at 1000 rpm at 250 V taking a current of…

A: Given, a DC series motor having Resistance across terminal, Rt = 1 ohm Speed, N1 = 1000 rpm Terminal…

Q: Q/ A 42 kW, 480 V, 988 r.p.m. d.c. shunt motor its full-load efficiency of 88 percent. The armature…

A: Need to find input power torque developed and current drawn by.motor

Q: 55 hp, 440 V, 400 rpm DC shunt motor draws 107 A when operating at rated conditions. The motor has…

A: In this question we will draw diagram of dc shunt motor showing all  resistance,currents and…

Q: Q1 :. A 220 V Shunt motor has a ratedl armature Current af 204. The armature bar resistance is o-52.…

A: Given : V(voltage of shunt motor) =220v Ia = 20 A =armature current Ra = 0.5 Ω =armature resistance…

Q: A 1200 rpm, 700V Series DC motor has an armature resistance of 20 and the field resistance of 90. If…

A: Efficiency = output power/ input power. Total losses = cupper loss + rotational losses.

Q: Induction motor Select one: O a isused in limited applications O b. is doubly fed motor since it…

A: Option c is correct. The detailed explanation is provided below.

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…

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Q: A dc series motor has an armature resistance of 0.06 Q and series field resistance of 0.08 Q. The…

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Q: electric car to Permanent Magnet Synchronous Reluctance motor.

A: Tesla made a significant change to its electric motor strategy with the introduction of the Model 3,…

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.