The torque developed by a dc series motor is 32 N-m when drawing 17 A. If the current is doubled, the torque developed becomes N-m.

Q: By increasing the flux of main pole of a dc motor, the speed will be reduced true O False

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Q: A 6 pole , three phase induction motor operates from a 300V,45Hz supply. The slip of the machines is…

A: For the three-phase induction motor speed at horsepower output of the motor is determined as shown…

Q: Find the torque developed in an induction machine rotating at 1450rpm if the power developed is 4kw.…

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Q: The induced torque in dc motors beyond the pole edges is Select one: O a. infinity Ob. 180 V OC. 220…

A: The diagram of the dc motor loop segment connected to the external source is shown below:  The…

Q: A 220V shunt generator is being powered by 36.5 Hp prime mover. if the armature resistance is 0.025Ω…

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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 Dc shunt generator produces 445 A at 250 V, the resistance of shunt field

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Q: A 4 Pole, 50 Three Phase Motor 25 Kg. The meter produces a maximum torque of 1350 Nm per minute. So…

A: Solution : Given data: pole P= 4 , frequency f=50 ,  Three Phase Motor Tm=  25 Kg, produces a…

Q: 1. The rotor of a 220-V., 60 Hz, 4-pole induction motor has a power input of 80 kW is observed that…

A: Copper loss: It is a loss in the form of the heat in the winding. This is undesirable for the…

Q: Calculate the rotor reactance per phase of an 8 pole, 50Hz, 30 induction motor which develops a…

A:

Q: The torque developed by a dc series motor is 10 N-m when drawing 7 A. If the current is doubled, the…

A: Given data:

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

A:

Q: 2. An alternator operates at a speed of 176.5 rpm. How many poles does it have if the voltage is…

A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…

Q: A 250 V d.c. shunt generator has 1250 watts constant loss. Find out load current at maximum…

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Q: Three phase induction motor develops a torque which depends on mechanical power developed and rotor…

A: We need to tell about the given statement is true or false.

Q: The shunt field winding of a DC motor has a resistance of 240Ω. Calculate the power loss when the…

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

A: Given data, The value of voltage is V = 220 V. The value of speed is N1 = 800 rpm. The value of…

Q: The torque developed by a dc series motor is 44 N-m when drawing 17 A. If the current is doubled,…

A:

Q: The torque developed by a dc series motor is 10 N- m when drawing 7 A. If the current is doubled,…

A:

Q: The field windings of a series motor has a resistance of 120 ohms at 15 deg. C. After running for…

A: The solution can be achieved as follows.

Q: Torque developed by electrical motor acts in the opposite direction with direction of rotation of…

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Q: 3. The operation of a 3-phase induction motor is based upon the application of: (a) Faraday's law…

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Q: on motor has a full-load slip of 4%. D.12 per phase respectively. Find (i) th maximum torque to…

A: In this question we will find speed at which maximum torque occur in induction motor...

Q: A short composite  motor  draw or pulls stream a current of 50 A at a voltage of 220 V it rotates at…

A: A short composite motor is nothing but a short shunt compound motor.  The given parameters for a…

Q: A dc motor develops of torque of 100 Nm at 1000 rpm. If the motor now runs at 1200 rpm, the torque…

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Q: A 415V squirrel cage induction motor develops a torque of 40Nm. The torque developed by the motor if…

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Q: If the inertia constant is 6 MJ/MVA, and the rating of the generator is 10 MVA, find the energy of…

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Q: An alternator has a poles a) At what speed must the machine be driven to develop 60 cycles?…

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Q: The plate of an induction motor include the following data: P=2364W, cos(phi)=0.95, 50HZ, 234rpm,…

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

A:

Q: a) The figure below shows the per-phase equivalent circuit of a two- pole three-phase induction…

A: Induction motor

Q: The torque developed by a dc series motor is 12 N-m when drawing 23 A. If the current is doubled,…

A: Need to find new torque

Q: A 240 V DC shunt motor takes 20 A and delivers 28 N.m at 1350 r.p.m, the efficiency is . O 73.63% O…

A: Given: A DC shunt motor having following specifications Rated voltage, V=240 V Current, I=20 A…

Q: A 197-watt permanent magnet DC motor has an armature res istance of 5.678 ohms. Determine the…

A: Given data is written as follows:

Q: Determine the torque speed characteristic of the following induction machines: A 460V, 15HP, 60HZ ,…

A: Given  The induction motor has  the following parameters Voltage V=460 vfrequency f=60 Hzpoles…

Q: A 220 V. 50 Hz. 4 pole. 1440 rpm single phase induction motor has: R,=52. R; - 5.6 2. X120 2. X, X;…

A: synchronous speed is Ns=120×504=1500 rpm   slip is s=1500-14401500=0.04

Q: A 3-phase, 115-V induction motor has the following constants: R1 = 0.070 R2'=0.08 N, X1=0.40 and X2'…

A: It is given that: V1=115 VR1=0.07ΩR'2=0.08ΩX1=0.4ΩX'2=0.2Ω

Q: 6. The field windings of a series motor has a resistance of 120 ohms at 15 deg. C. After running for…

A: According to the question we have to find the value of new temperature of winding.

Q: in series connected DC motor, the equation of electromagnetic torque is O Te = Laf * If * la O Te =…

A: Types of DC Motor DC series motor DC Shunt Motor Sepereted excited Motor Compound Motor…

Q: The torque developed by a dc series motor is 16 N-m when drawing 23 A. If the current is doubled,…

A: Given data:

Q: A 10 – hp, 4 pole, 25Hz 3-phase induction motor is taking 9100 watts from the line. Core loss is 29…

A:

Q: A 208-V four-pole 60-Hz Y-connected wound-rotor induction motor is rated at 30 hp. Its equivalent…

A: Power converted from electrical to mechanical is Pconv=(1-s)PAG. where s is slip and  PAG is the air…

Q: A 208-V four-pole 60-Hz Y-connected wound-rotor induction motor is rated at 30 hp. Its equivalent…

A: As per the guidelines of Bartley we supposed to answer first three subpart only for solution of…

Q: 4. If the no load speed of DC motor is 1300 rpm and full load speed is 1100 rpm, then its voltage…

A: Given, A DC motor with No load speed = 1300 rpm Full load speed = 1100 rpm

Q: A 208-V four-pole 60-Hz Y-connected wound-rotor induction motor is rated at 30 hp. Its equivalent…

A: The answer as given below:

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

A: take the ratio of back emfs to find external resistance in series with armature to operate motor at…

Q: A 400V, 25hp, 601 4 pole, Y-connec induction motor I the following

A: Given that 400V,25hp,60Hz,4pole Y-coonected induction…

Q: Q8 : A 220 V. 50HZ.4 pole. Y-connected .design class B induction motor is tested in the laboratory…

A: The solution can be achieved as follows.

Q: A 6-pole alternator running at 1000 rpm, supplies an 8 pole induction motors. Find the actual speed…

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Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.