Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Question
Chapter 29, Problem 2RQ
To determine
The type of voltage that is produced in all rotating armatures.
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A dc machine has 4-pole, wave wound armature with 46 slots and 16 conductors per slot. If induced voltage in the armature is 480 V at 1,200 rpm, determine the flux per pole
4. A 4-pole, lap-wound armature has 144 slots with two coil sides per slot, each coil having
two turns. If the flux per pole is 20 mWb and the armature rotates at 700 rpm, what is the
induced voltage?
2- A 4-pole, wave-wound d.c. shunt generator has an armature winding consisting
of 300 turns each of 0.0020. The armature resistance is
a) 0.152 b)0.62 c) 0.30 d) none of above
Chapter 29 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 29 - What is a generator?Ch. 29 - Prob. 2RQCh. 29 - Prob. 3RQCh. 29 - Prob. 4RQCh. 29 - What are interpoles, and what is their purpose?Ch. 29 - How are interpoles connected in relation to the...Ch. 29 - Prob. 7RQCh. 29 - How is the series field connected in relation to...Ch. 29 - How is the shunt field connected in relation to...Ch. 29 - What is armature reaction?
Ch. 29 - What is armature reaction proportional to?Ch. 29 - What are eddy currents?Ch. 29 - What condition characterizes overcompounding?Ch. 29 - What is the function of the shunt field rheostat?Ch. 29 - Explain the difference between cumulative- and...Ch. 29 - Explain the difference between cumulative- and...Ch. 29 - What three factors determine the amount of output...Ch. 29 - What is the voltage regulation of a DC generator...Ch. 29 - Prob. 19RQCh. 29 - Prob. 20RQCh. 29 - You are working as an electrician in a large steel...
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- In DC machine winding, number of commutator segments is equal to number of armature coil sides ) number of armature coils ) number of armature conductors ) number of armature turnsarrow_forwardA four-pole lap-wound DC machine armature has 54 slots with single-turn coils. How many armature conductors are required if there are two coil sides per slot?arrow_forwardThe voltage induced in 8 poles lamp wound generator is 120 V with armature resistance = 0.3 2. What will be the terminal voltage at a load = 3.6 A when the machine is rewound as a wave?arrow_forward
- In DC generator is used for smooth rotation of armature.arrow_forwardName the principal parts of a rotating electrical machinearrow_forwardA4-Pole, duplex wave-wound de generator, has 144 slots with 2 coils per slot, each having two turns. If the flux per pole is is 20mWb and the armature rotates at 1500 rpm and the armature develops a power of 25kW, what will be the current in each path (in Amp)?arrow_forward
- The strength of the rotating magnetic field in a three phase induction motor is equal to times the flux produce ...... ....... in one of the phase windings. 1.25 1 O 1.5arrow_forwardQ2) A wave wound DC generator armature has six - pole and 50 slots. Each slot contains 20 conductors. The required generated voltage is 250 V. a) What would be the speed of the armature, if flux per pole is 0.007 Wb? b) If the armature is rewound as lap formation and run at the same speed you found in part a) above, what will be the generated voltage? The flux per pole is 0.007 Wb.arrow_forwardA 2 pole wave wound dc generator has 44 slots, each slot having 20 conductors. The flux/pole is 0.018 weber. At what speed the armature be rotated to get an induced emf of 220 V. What will be the induced emf developed if the armature winding is lap connected and runs at the same speed. Speed Generated Emf when lap connectedarrow_forward
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Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
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ISBN:9781337900348
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