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3
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6.4k
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Calculate approximate overall dimensions for a 200KVA, 6600/440 V, 50HZ, 3 phase core type transformer, The following data may be assumed;
electrical machines updated 4.2 years ago by rjran106 • 20
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2.8k
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Determine the induced EMFand angular retardation of the rotor when fully loaded at U.P.F.0.8 P.F. lagging ,0.8 P.F.leading
electrical machines updated 4.2 years ago by phenjoisilab • 0
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2.0k
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The iron loss at the working flux density is 2.6 W/kg. Iron weight $7.8\times 10^3 kg/m^3$ . Stacking factor is 0.9.
electrical machines updated 4.2 years ago by rjran106 • 20
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1.6k
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Write notes on Ideal synchronous machine
electrical machines updated 4.2 years ago by phenjoisilab • 0
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5.0k
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A 4kva 200/400v 50hz single phase transformer gave the following test results
electrical machines updated 3.7 years ago by yashbeer ★ 11k
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2.2k
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Two three phase transformers rated at 500KVA and 450KVA respectively are connected in parallel to supply a load of 1000KVA at 0.8PF lagging.
electrical machines updated 4.2 years ago by rjran106 • 20
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2.9k
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Write the expression for ratio and phase angle error of potential Transformer.
electrical machines updated 4.2 years ago by rjran106 • 20
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1.1k
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Suggest the different methods to reduce the ratio and phase angle Error of potential transformer.
electrical machines updated 4.2 years ago by rjran106 • 20
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1.5k
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The requisite flux set up in the core by an mmf of 80a.the frequency is 50hz and the net cross-section of the core is 1000mm2.calculate the ratio and phase angle error.
electrical machines updated 4.2 years ago by rjran106 • 20
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2.1k
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What are the factors influencing in small scale fading?
electrical machines updated 4.5 years ago by yerasylmakulbe671 • 10
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1.0k
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Describe the difference in construction of rotors of alternators used in hydroelectric plants and steam power plants. Draw neat sketches of two types of rotor.
electrical machines updated 4.5 years ago by ngharat984 • 20
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721
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Explain in detail steady state analysis of induction machine using generalized theory of primitive representation.
electrical machines updated 4.2 years ago by phenjoisilab • 0
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629
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Derive basic machine related d-q variables for an induction machine.
electrical machines updated 4.2 years ago by phenjoisilab • 0
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1.3k
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Explain steady state analysis of synchronous machine.
electrical machines updated 4.2 years ago by phenjoisilab • 0
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1.9k
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Derive the expression for armature to field mutual inductance and armature self inductance of salient pole synchronous machine.
electrical machines updated 4.2 years ago by phenjoisilab • 0
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625
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Derive Synchronous machine voltage equation in d p o variables by the use of coupled circuit theory and Parks transformation
electrical machines updated 4.2 years ago by phenjoisilab • 0
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1.5k
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List down advantages of modelling of electrical machines.
electrical machines updated 4.2 years ago by phenjoisilab • 0
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652
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Write expression for all the self and mutual inductance in terms of $\theta$
electrical machines updated 4.2 years ago by phenjoisilab • 0
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668
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Draw a neat diagram & Explain in brief generalized representation of synchronous machine with and without damper winding
electrical machines updated 4.2 years ago by phenjoisilab • 0
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1.1k
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Write short notes on Hunting, causes effects and remedies
electrical machines updated 4.2 years ago by phenjoisilab • 0
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3.5k
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Explain with neat diagram power circle & o curve of synchronous motor
electrical machines updated 4.2 years ago by phenjoisilab • 0
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710
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Explain the behavior of synchronous motor catering to constant power output with changing excitation. Draw the phasor diagram.
electrical machines updated 4.2 years ago by phenjoisilab • 0
0
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630
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Synchronus motor is not self-starting .why?
electrical machines updated 4.2 years ago by phenjoisilab • 0
0
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595
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Explain the principle of opertion of a 3 phase synchronous motor
electrical machines updated 4.2 years ago by phenjoisilab • 0
0
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965
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Explain the slip test to measure $X_d$ and $X_q$ of salient pole synchronous machine. OR Write short notes on slip test.
electrical machines updated 4.2 years ago by phenjoisilab • 0
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