The efficiency of a 200 kVA, single phase transformer is 98 % when Operating at full load 0.8 lagging p.f the iron loss in the transformer is 2000 watt. Calculate the full load copper loss, Half load copper loss and efficiency of half load

Q: Flashing the field of a direct current generator implies   Neutralising residual magnetism…

A: Flashing the field of a direct current generator implies that

Q: A 4 pole generator with wave wound armature has 52 slots each having 22 conductors. The flux per…

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Q: A 4 pole generator with wave wound armature has 58 slots each having 24 conductors. The flux per…

A: Given :For wave connection, A= 2  No. of Pole, P= 4 Slots= 58, each having 24 conductors So, Z=…

Q: Mention 3 factors causing a permanent magnet generator not to generate emf

A: The objective of the question is to identify the three main factors that can cause a permanent…

Q: Figure Q1 shows a transformer core that has the primary winding (N,) of 500 turns and second winding…

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Q: A 6 pole generator with wave wound armature has 50 slots each having 20 conductors. The flux per…

A: Given data, A generator has P=6A=2Slots=50Conductors per slot, 20ϕ=0.01 WbE=220 V

Q: A 6 pole generator has a flux of 12 mWb per pole. The armature has a total of 900 conductors and is…

A: We have a generator with, Pole (P) = 6 Flux/pole Ф = 12 mWb                      = 0.012 Wb…

Q: A 4 pole generator with wave wound armature has 54 slots each having 28 conductors. The flux per…

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Q: Ih a d.c generator flux is directly proportional to L2 times field current.The generator is working…

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Q: Q1/(a) Discuss B-H curve of a ferro-magnetic material.

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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: When the field resistance in the synchronous generator decreased, its flux and terminal voltage:…

A: Choose the correct option.  This question is based on the synchronous Generator.  When the field…

Q: The core of an electro-magnetic structure is Laminated in order to: reduce the Stacking Factor…

A: Core of the transformer:- The core is constructed of numerous thin strips of grain-oriented silicon…

Q: A 4 pole generator with wave wound armature has 50 slots each having 28 conductors. The flux per…

A: Consider the given data and below attached image.

Q: xplain why, when steel is subjected to alternating magnetization energy, losses occur due to both…

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Q: A 6 pole generator with wave wound armature has 50 slots each having 20 conductors. The flux per…

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Q: The leakage flux passes through the primary winding but not in the secondary winding and vise-versa

A: The leakage flux passes through the primary winding but not in the secondary winding and viceversa

Q: A 4 pole generator with wave wound armature has 50 slots each having 28 conductors. The flux per…

A:

Q: A long shunt compound generator delivers a current of 10A at 200V and has a series field resistance…

A: Rsh = 200 Rse = 1 ohm Ia = 10 A

Q: A 6 pole generator with wave wound armature has 54 slots each having 28 conductors. The flux per…

A:

Q: 6) Flashing the field of D.C. generator means A. Neutralizing residual magnetism B. Creating…

A:

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

A: Given, Single phase transformer. Single phase supply voltage, e=111 V. Frequency, f=50 Hz. Number…

Q: (i) At what speed must the armature rotate to give an induced EMF of 235V is, (ii) What will be the…

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Q: A 4 pole generator with wave wound armature has 50 slots each having 22 conductors. The flux per…

A: The solution can be achieved as follows.

Q: Diagram (applies to all subsequent problems): W(s) Y(s) R(s) U(s) Da (s) Gpi (s) H(s)

A: A Transfer Function is the ratio of the output of a system to the input of a system, in the Laplace…

Q: Q2\A/ A 8 pole de generator has 500 armature conductors and a useful flux of 0.05 wb. What will be…

A: Given data: DC generator  Poles, P=8 Armature conductors, Z=500 Useful flux, ϕ=0.05 Wb Speed, N=1200…

Q: Figure 1 shows an electric generator with 3 rotor windings as marked by a-1, b-2 and c-3. A…

A: The objective of the question is to design a 3-phase 3-wire connection for an electric generator…

Q: winding

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Q: A 4 pole generator with wave wound armature has 54 slots each having 20 conductors. The flux per…

A: We will use direct formula for developed voltage , we will put all known parameters to find out…

Q: An electromagnet has a movable iron part and dimensions of magnetic circuit with uniform cross…

A: a) R= 1697652.73 H-1, L= 9.694 mHb) flux= 70.69 micro Wb, flux density= 0.118 T, field intensity of…

Q: 4. When driven at 1000 r.p.m. with a flux per pole of 0.02 Wb, a d.c. generator has an e.m.f. of 200…

A: We need to find out induced emf for given generator

Q: A 6 pole generator with wave wound armature has 56 slots each having 20 conductors. The flux per…

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Q: A 4 pole generator with wave wound armature has 50 slots each having 26 conductors. The flux per…

A: Given : A 4 pole generator  Total number of conductors, Z = 50×26 = 1300 To find the speed of…