A permanent magnet DC motor has the Torque-Speed characteristics shown in the above figure for a fixed supply voltage. If Ts = 175 N, R = 1400 W, ke = 13 V/(rad/s) and kt = 190 N/A. The speed to achieve maximum power output is Selected Answer: 49.6 rad/s

Q: Design a controlled half wave rectifier circuit to produce an average of 30 V across a 250 ohm load…

A: In this question we need to design a controlled half wave rectifier circuit to produce an average of…

Q: Describe the similarities in the construction of a DC motor and a DC generator.

A: From a mechanical standpoint, a DC motor and a DC generator are quite similar, but from a technical…

Q: A dc generator has a field flux of 0.001 Wb and 4 poles. The machine operates with at shaft speed of…

A:

Q: 3Electromechanics

A:

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

A: induced voltage=eind=(BxV).leind=(BxV).leind=BVlSinθB=Magnetic feildV=Velocityl=Lengthθ=angle…

Q: A dc generator is run at 500 rpm. The eddy current losses and hysteresis losses are found to be 100…

A:

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 four-pole induction motor drives a load at 2575 rpm. This is to be accomplished by using an…

A:

Q: 8. Find the counter-EMF voltage of a permanent magnet DC motor when it runs at 2080 rpm. The…

A: The solution is given below

Q: Increasing the frequency of the supply :will .Decrease the rotor speed at a certain load torqueO…

A:

Q: Determine the voltage drop per brush on a dc machine if the armature current is 150A and its…

A:

Q: 16 A 4-pole dc series motor has wave connected winding with 600 conductors. When fed from 250 V dc…

A: In this question We need to determine the torque developed of the motor We know Torque = power/w…

Q: The DC shunt generator with the terminal voltage 350 V, armature drop 9 V and the each brush drop 4…

A: We need to tell about generated voltage for generator.

Q: Stationary part in a DC machine is called A5 a) rotor b) commutator c) stator d) none of these

A: In this question we will write about stationary part in a DC machine....

Q: A single-phase 111-V, 50-Hz supply is connected to a coil with 200 turns of a coil-core assembly as…

A: In this question,  We need to determine the magnitude of the maximum flux in the core.

Q: At rated voltage, a 125 kw, 300-V long shunt compound system provides power with a stray power loss…

A:

Q: In the DC shunt generator, the induced voltage in idle operation is 127V. Output voltage when loaded…

A:

Q: The output of a shunt generator is 66A at 100V. Armature resistance is 0.04Ω and the field…

A:

Q: A 240 V series lift motor has resistance of 0.2 ohm. At the speed of 1800 r.p.m. it takes 40 A. Find…

A:

Q: 5. A 230V series motor with 4-pole, 600 conductors wave-connected supplying a load of 7.5kW by…

A:

Q: A dc shunt generator has a critical field resistance of 400 at 1200 rpm. Now if the speed of the…

A:

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 230 V dc series motor has Ra=0.22, Rf=0.12. The motor draw 40A at rated speed and 1000 RPM. Find…

A:

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: 6. The O.C.C. of a shunt generator when separately-excited and running at 1000 r.p.m. is given by :…

A: 6. The Open circuit characteristics of a shunt generator when separately-excited and running at 1000…

Q: The factors effecting the speed of dc motor are The flux p and the voltage across the armature The…

A: The factor affecting the speed of the dc motor is as follows; N=V-Ia RaϕN= speed of dc…

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: what is the conclusion for the concepts of rotating amature and rotating field in an alternator?

A: There are two types of alternators are used one is rotating armature type and the other one is…

Q: The DC shunt generator with the terminal voltage 350 V, armature drop 7 V and the each brush drop 2…

A:

Q: Q3: A universal fractional horsepower series motor has a resistance of 30 Q and a total inductance…

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

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

A:

Q: The e.m.f. induced in the armature of a shunt generator is 600V. The armature resistance is 0.1 ohm.…

A: Given, Induced EMF, Eg = 600 V Armature resistance, Ra = 0.1 ohm Armature current, Ia = 200 A…

Q: In a motor-generator set, calculate the number of poles required in the motor to convert AC 25 Hz…

A: In this question we have to find out motor poles....

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.