Electrical and Electronics Engineering

Important MCQ questions for GATE, ESE Engineering Service Examination, IES, PSU Examination and Study Material For Electrical and Electronics Engineering in Circuit Theory, Network Theory, Material Science, Power System, Control System, Measurement, Power Electronics, Transformer and Electrical Machine, Control System, EMT, Power Electronics, Microprocessor and Communication System.

Showing posts with label IES/ESE 2006 Objective Paper 2. Show all posts
Showing posts with label IES/ESE 2006 Objective Paper 2. Show all posts

Wednesday, April 27, 2016

Which three phase connection can be used in a transformer to introduce a phase difference of 30 degree between its output and corresponding input line voltages?


  1. Star-Star
  2. Star- Delta
  3. Delta-Delta
  4. Delta-zigzag
Answer : Star - Delta
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Labels: Electrical Machine, IES/ESE 2006 Objective Paper 2, IES/ESE 2011 Objective Paper 2, Important MCQ Question

Monday, April 25, 2016

A transformer has a percentage resistance of 2% and percentage reactance of 4%. What are its regulations at power factor 0.8 lagging and 0.8 leading , respectively?


  1. 4% and -0.8%
  2. 3.2% and -1.6%
  3. 1.6% and -3.2%
  4. 4.8% and -0.6 %
Answer :  4% and -0.8%
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Labels: Electrical Machine, IES/ESE 2006 Objective Paper 2, IES/ESE 2008 Objective Paper 2, Important MCQ Question
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