Given a motor with the following parameters: Rw = 12 Ω (winding resistance) Kv = 5.67mV/RPM (back e.m.f. constant) Kt = 552 gm-cm/A (Torque constant) Rf = 0.0236 gm-cm/RPM (mechanical friction) (a) What voltage should be provided for unloaded speed of 4000 RPM? (b) Let the motor drive two similar generators. What speed should be at 16Volts?

Q: A D.C series motor hoists a load at 4 m/sec while taking 30 A at 300 V from D.C mains. The total…

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

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Q: 3Electromechanics

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Q: In a DC motor the relation between the core loss (Pcore) and rotational loss (Protational) iS O…

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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: 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: I. Problem solving. Solve the following problems. 1. A 36-pole alternator is operated at 20 rps.…

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Q: c) The O.C.C. of a DC shunt generator running at 300 rpm is as follows. 3\ 132 6. 190 4 Ir (A) Eo…

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Q: Speed control 11 12 field 1 h eo stat 5 Prime armature E1 Mover 6. DC Generator Power Supply Load…

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Q: The dc series motor has a linear torque- speed characteristics. O True O False

A: The dc series motor has a inverse torque-speed characteristics.

Q: 440-V alternator operating from a 30-hp prime mover turning at full capacity produces 20 kW into a…

A: We need to find out effeciency and rotor speed .

Q: SHOW THE CIRCUIT AND COMPLETE SOLUTION A 75-KW, 440V DC generator has 90% efficiency during full-…

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Q: H. W.: A 35 kW induction motor has power factor 0.9 and efficiency 0.9 at full-load, power factor…

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

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Q: b) A newly built institution has bought a D.C. shunt generator to supply a library in order for…

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Q: EAl 500 450 420 430 --------------- 400 300 200 100 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 4.75…

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Q: 1- In an alternator, the armature reaction influences the magnitude of Wave form of generated…

A: NOTE- “Since you have posted a question with multiple sub-parts, we will solve first three subparts…

Q: A 13kV/50Hz/50MW generator is rotated at 750 rpm. The mechanical power loss of the system is %10…

A: given data: A 13kV/50Hz/50MW generator is rotated at 750 rpm. The mechanical power loss ofthe system…

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

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Q: 17 Slip against Torque 90 80- 70- 60 50 40 30 20 10 0.4 0.6 0.9 0.5 Slip 01 0.2 0.3 0.7 0.8 In the…

A: Given: Characteristic graph:

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

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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: ä. 50 20. For direct current generator, the ratio between the number of coils to the number of…

A: Practically no. Of coil side will be equal to no. Of commutator segment.

Q: ideal Diesel cycle

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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....

Q: The following questions refer to to a 6-pole DC generator has a simplex lap-wound armature…

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Q: 0 A 440 V, 60 Hz, star connected, the four-pole synchronous generator has a synchronous reactance of…

A: NOTE-As per the rules we can answer only 3 sub-parts, please post the remaining sub-parts as the…

Q: A) Although the magnetic field for each phase of a 3-phase induction motor is merely switching back…

A: For a 2 pole, 3 phase stator winding, the three windings are displaced from each other by 1200 along…

Q: Differentiate the two generators shown in Figure 1.6.1-1 and Figure 1.6.1-2. The output voltage can…

A: Consider the first generator: This is a permanent magnet generator that is a machine that changes…

Q: C1 (i). The output of the 3-phase, 430 V induction motor is 19 kW and operates at power factor of…

A: in Two watt meter method, Reactive power=3×P1-P2 Active power=P1+P2. Using above relation We will…

Q: I. Problem solving. Solve the following problems. 1. A 36-pole alternator is operated at 20 rps.…

A: NOTE As per our guidelines we are supposed to answer only one question at a time. Please repost the…

Q: Q1: A 3-phase induction motor has an output a 37KW at this load the stator copper loss and rotor…

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Q: separately develops rpm and field current is adjusted to 2.6a. What emf. will be generated if the…

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Q: In a given DC motor, the output power is 20 HP, and the rotational losses are 1.1 KW. If the motor…

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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: Iron loss of DC motor is constant with the load. Select one: O True O False

A: Iron loss depends on voltage.  As voltage is constant iron loss is constant.

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.