A 6 pole DC lap wound generator has 41 armature conductors with flux per pole is 23 mWb and the e.m.f generated is 80 V, then the speed of the machine is O 0.74 rps O 84.84 rps O 7.43 rps 84.84 rps

Q: 13. A 200V DC Generator has a shunt field resistance of 200ohms. Its field current A) 1A B) 2A C) 3A…

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Q: 13. A 200V DC Generator has a shunt field resistance of 200ohms. Its field current A) 1A B) 2A C) 3A…

A: 13. Given data, Terminal voltage V = 200 V Field resistance Rf=200 Ω

Q: In transformers, the flux lost in the air is called nd as SKW. If th

A: There are two types of flux in trabsformer, namely, Linkage flux Leakage flux

Q: A 4-pole DC generator has 1,000 turns on its rotor. It is being turned by a prime mover at 4,000 RPM…

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Q: Iron losses in a DC machine are independent of variations in

A: The explanation is as follows.

Q: Check all the correct statements on AC machines (induction and synchronous) below. O The current…

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Q: A DC generator with 8 pole, duplex lap winding excited with a flux of 3mWb/ pole. The number of…

A: Given: A DC generator with number of pole, P=8. Multiplexity of lap winding, m = 2 (duplex winding).…

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: Can you explain the given questions in an original way? Factors Affecting Electrical Energy in DC…

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

Q: in lab winding schemes, The-2 induced emf in a coil is emf in .coil for wave winding a) greater than…

A:

Q: True or False: In a DC Machine, the field windings can only be found at the Stator

A: In DC motor the field winding is on the stator of the motor and the armature winding is on the rptpr…

Q: A 6 pole DC wave wound generator has 21 armature conductors with flux per pole is 29 mWb and the…

A: emf indued E = Flux×speed×no.of conductors60×no. of polesno. of parallel paths Given Flux=29 m Wb…

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: The generated voltage per phase of an alternator is E0 while the speed of rotor rotation is 3000…

A: We will establish the relation between the generated voltage and the speed of the alternator.

Q: If we need to use a DC generator witha very good voltage regulation we choose: * DC Generators…

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Q: In generator, the generated e.m.f will increase with the load. separately excited dc generator self…

A: In this question we need to choose a correct option.

Q: 3. A group of electromagnets that create flux in a d-c generator (the field circuit) has an…

A:

Q: 4-Is the residual magnetism on the generator is necessary how can you cancel these residual…

A: The residual magnetism in the generator is necessary because it helps in the voltage build-up of the…

Q: Q1/ Calculate the voltage per phase for a 3-phase 1500 rpm, 4-pole alternator having a 16 conductors…

A: Eph = 4.44 kpkdϕf Tphkp = pitch factor = cos α2α -short pitch angle kd = Distribution factor = sin…

Q: block diagram fro dc motor refrigerator

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

Q: In a DC machine, the reversal of currentrom one direction to opposite direction is done by O…

A: In this we will write about reversal of current in dc machine....

Q: A 6-pole lap wound generator has 900 conductors. The e.mf induced per one tur being 3 V. the…

A: Given lap connected , So, No. of poles = No. of parallel paths = 6 Given voltage per turn = 3 volts…

Q: A three-phase synchronous generator is rotating at 1500 RPM synchronous speed. The output power of…

A: In this question we will find induced torque in generator...

Q: A 6 pole DC wave wound generator has 28 armature conductors with flux per pole is 25 mWb and the…

A: Let N is be the speed in rpm EMF induced = flux×speed N ×no. of conductors60×no.of polesno.of…

Q: Q10. The rotating machine of Figure Q10 has the following parameters: Lss = 0.18 H, L = 0.06 H, and…

A: Given Source A=2.5 A (DC) Source B =8.5 A(rms), 50 Hz   peak values are Source A=2.5 A Source B=8.52…

Q: A synchronous machine rated 50 MW, 50 Hz has a rated load of 40 MW. Load varies by 1% for 1% change…

A: Given- 50 MW, 50 Hz rated load of 40 MW, Load varies by 1% for 1% change in frequency, To Find- The…

Q: Shunt generator running at 2000 rpm, if flux is reduced by half, then what is the new speed * 1000…

A: Let us find the new speed using the emf equation used in the case of dc generator.

Q: A dc 4 pole wave wound generator is running at 1000 rpm having 1200 conductors and flux density is…

A: Given Data: Z = 1200 N = 1000 A = 2 P = 4 flux = 10 mwb

Q: Prove that in a DC generator the maximum efficiency is obtained when constant loss is equal to the…

A: Solution: The efficiency of a D.C generator is given by the formula,…

Q: The shunt DC generator gives almost O Constant current O None of these O Constant voltage O Constant…

A:

Q: A 3-phase, Y-connected, AC generator has a stator with 120 slots, each slot contains 15 conductors.…

A: Principle of Machine: In any electrical machine either it's a DC machine or AC machine, the EMF in…

Q: A 4-pole DC generator runs at 650 rpm and generates an EMF of 200 V. The armature is wave wound and…

A: Given a DC generator with, Rated emf, E = 200 V Total number of pole, P = 4 Speed, N = 650 rpm Wave…

Q: Maximum torque is realized when an armature winding is with the magnetic field at 90° O inline or at…

A: With reference to synchronous machines, the load angle or the power angle is the angle between the…

Q: A four-pole dc generator has a wave-wound armature containing 48 slots with eight conductors per…

A:

Q: The sinewave has a peak voltage of 7 A and a Half cycle value of 9.3333 ms. What is the frequency?

A: Given Sine wave , peak value A peak =7 A Half cycle time = 9.3333 ms  f= frequency

Q: A dc machine has hysteresis loss of 300 W and an eddy current loss of 200 W when running at 1200…

A: Hysteresis loss Wh=300 W eddy current loss We=200 W The speed is N=1200 rpm Total core loss…

Q: flux through each turn of a 100 turn coil is (t3-2t) mWb, where t is in seconds. Find the magnitude…

A: In this question flux is given through coil..We have to find magnitude of induced emf..

Q: The flux per pole of a two-pole generator is 7.5x10^-5 wb. A coil of 600 turns rotates in this…

A: Given Data:-ϕ=7.5×10-5 wbZ=600 turnstime take from maximum  to one minimum =0.0187 sec

Q: A DC generator has eight poles, wound as lap then rewound as a wave, calculate the electrical motive…

A: In this question,  DC Generator ,  Number of pole P= 8,   Number of conductors Z= 240 Flux = 0.04wb…

Q: then the AT required

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Q: Calculate the phase and line voltages of three phase star-connected 4 pole small alternator having a…

A: Given data, The total flux is 0.30 Wb. The relative speed is 1500 rpm The number of pole is 4. The…

Q: tors with fiux per pole is 21 mwbD and the e m.f generated is 63 V, then the speed of the machine is…

A:

Q: electromotive force created by a direct current generator is proportional to Flux/pole…

A: We need to tell about generated emf . We know direct formula for emf .

Q: A four pole, 1200 rpm DC lap wound generator has 1520 conductors. If the flux per poles is 0.01 Wb.…

A: Given: DC lap wound generator having P=4N=1200Z=1520ϕ=0.01 Wb