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What is the armature winding made up of and why?
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Why Low Voltage winding near core of the Transformer?

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Why field rheostat is kept in minimum position while armature rheostat at maximum position?

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In the motors starting purpose why the armature rheostats at maximum position while the field rheostat is kept in minimum position?

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What is the difference between auxiliary winding and main winding?

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What is the difference between a 2 winding and 3 winding transformer?

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Write the armature current and voltage relationship of a Separately excited DC Generator.

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A plant consists of two 10 MVA generators of reactance 18% each and two 5 MVA generators of 12% each. All are connected to bus bar to supply a load through three step up transformers of 8 MVA each having reactance of 8%. Determine fault MVA on HV side of any one transformer.

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Explain the experimental set-up for the Newton’s rings formation with suitable diagram. Write conditions for dark and bright rings.

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What is the difference between step-up and step-down transformers?

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What is the difference between a step-up and step-down transformer?

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What is the difference between pull-up and down resistors?

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Explain the conditions for setting up negative phase sequence currents in an alternator. Draw the protective scheme to detect them and operate the CB.

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What is the difference between step up and step down cycloconverter?

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What is the difference between step up and step down cycloconverters with their application?

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What are the key differences between a step-up and a step-down transformer?

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State advantages of short pitch winding over full pitch winding in alternators.

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What is the function of field winding in a DC Machine?

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What is the role of insulation in the stator winding of an induction motor?

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How does an autotransformer differ from a two-winding transformer?

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Explain the dimmer by using a two-winding transformer.

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What are the two major methods of minimizing the effects of armature reaction?

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What is the best way of minimizing eddy currents in an armature?

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Define armature reaction in an alternator. Explain the effect of armature reaction at various power factors of loads of alternator.

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State any four advantages of having stationary armature in case of three phase alternator.
Answer : In a three-phase alternator, having a stationary armature (i.e., the armature is fixed and the rotor rotates) provides several advantages: 1. **Simplified Design**: A stationary ... seen in machines with rotating armatures. This leads to lower maintenance requirements and longer operational life....

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What type of material is used to make the armature core?

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What is the significance of lamination in the armature?

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What is the significance of air holes in the armature?

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How does armature reaction affect machine performance?

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