series wound DC motor is producing 3000 pound-inches of torque at a speed of 1450RPM. The motor is connected to 1250 volt DC line and has a current draw of 63.6A. What is the efficiency of the motor?

Q: following: a)Types

A:

Q: A 220 V dc shunt motor draws a current of 50 A from the supply and runs at 900 rpm. Its armature and…

A:

Q: 3. Calculate the torque develop of an induction motor supplying the following power and speeds: a. 5…

A: Given the power and speeds, Pm=T2πN60T=Pmx602πN

Q: a 15 hp, 220 volt, 1800 rpm shunt motor has an efficiency of 87% at full load, the resistance of the…

A: In this question, we need to determine the torque of the motor.torque =

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

A:

Q: A 145 -V shunt motor has an armature and shunt field resistances of 0.38 and 182 Ohms respectively.…

A: It is given that: Vt=145 VRa=0.38 ΩRsh=182 ΩIL=26 AProt=822 WVb=2.06 V

Q: Explain working of an induction motor in your own word and in detail Please do it fast

A: The motor which works on the principle of electromagnetic induction is known as the induction motor.…

Q: If the armature current in a dc machine is 400A, what should be the current in each winding if the…

A: Given Armature current = 400 Amp, No.of Poles = 10 To calculate current in each path

Q: An induction motor develops rated torque with a slip of 3.5% when the rotor is cold. If the rotor…

A: Answer : given that an induction motor develops rated torque with  a slip of S = 3.5%= 0.035 rotor…

Q: (C)-Draw the mechanical characteristic of shunt and series DC motors. dienas SKINVER

A: Graph are provided,x and y axes are labelled with typical notations.

Q: The torque in dc series motors depend on Select one: O a. the square of the field voltage Ob. the…

A: In this question we will write about torque in dc series motor...

Q: By decreasing the stator voltage of induction motor to 80% of its rated voltage, the maximum torque…

A: Torque is directly proportional to the square of voltage. Let the reduced voltage be V'. Then , V'=…

Q: the forward torque will be equal to the backward torque at slip of two one none of the mentioned O…

A: In this question,  Choose the correct options What is slip if forward torque and backward torque are…

Q: A 4 pole, wave wound, dc series motor is driven at 1600 rpm and takes armature current of 60A. The…

A:

Q: The armature resistance of a 230 V dc shunt motor is 0.5 ohms. It runs at 490 rpm when the armature…

A: Given Armature resistance Ra=0.5 Ω Terminal voltage Vt =230 v Speed N1=490 rpm Armature current Ia…

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

A:

Q: Some Unique Features of the Hysteresis Motor

A: Hysteresis motor is a type of motor which comes under the category of synchronous motor which has…

Q: How can we calculate the speed of the induction motor provided that the induction motor drive keeps…

A: Speed Control of IM There are many methods to control the speed of IM. Variable Voltage Control…

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

A:

Q: A 200V long-shunt generator delivers 100A, has an armature resistance of 0.050, a series field…

A:

Q: (c) A shunt generator delivers 50 kW at 200 V and 450 rpm. The armature resistance is 0.02 ohm and…

A: Use equivalent dc machine model to solve all the parameters Even though the machine operation…

Q: What is the starting current of a 15hp, 240 V dc motor has an armature resistance of RA= 0.402 and…

A: Given, The power rating of the DC motor = 15 hp. Terminal voltage, V=240 V. Armature resistance,…

Q: 3. A 25 Kw shunt generator is delivering full output to 400V bus bars and is driven at 950 rpm by…

A: For generator Generator emf= terminal voltage +voltage drop in armature resistance.  For motor,…

Q: Q2: b- Explain how does the three- phase induction motor work?

A: INDUCTION MOTOR: Based on the rotor construction, the induction motor is classified into Squirrel…

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…

A:

Q: What should be the number of revolutions of a dc machine to be able to have a generated em of 200V?…

A: In this question We need to determine the speed of the DC shunt motor.  We know E= PΦZN/(60A)

Q: The armature winding resistance of a 200 Volt 4-pole DC motor is 2 ohms. Under full load, the…

A: Given armature winding Resistance R=2 ohms Given Terminal voltage  V=200 no of conductors Z=360 no…

Q: What should be the number of revolutions of a dc machine to be able to have a generated em of 200V?…

A: Given data- DC machine- Generated emf E=200 V, Number of poles P=4, Total active conductors Z=746,…

Q: A dc generator has a prime mover that provides a speed of 1568 rpm at a torque of 22.6 N-m. With…

A:

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

A:

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: BLOCK

A:

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

A:

Q: 240V dc shunt motor has an output of 15.25Hp and runs at 1500 rpm. What will be the torque in…

A:

Q: What is the difference between torque of (1- 0) induction motor & torque of (3- 0) induction motor…

A: Given that  What is the difference between torque of single phase induction motor & torque of…

Q: If the armature current in a dc machine is 400A, what should be the current in each winding if the…

A: Note In Lap winding,  Number of pole (P) = Number of Parallel path (A) In Wave winding, Number of…

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: Draw torque vs slip for an induction motor.

A: we need to draw torque vs slip for an induction motor.

Q: Induction motor speed control technique with bad torque response to sudden changes is O V-F control…

A: Induction motor speed control technique with bad torque response to sudden changes is...

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.