Q3. Explain the matching of an induction electric motor to a pump required for main circulating duty, with the aid of pump characteristic and torque/ship diagrams (16)
Q1.a) Explain the meaning of the term power factor correction (4)
b) State advantages of power factor correction (4)
c) Explain, with the aid of a circuit diagram, how power factor correction can be effected in a three phase circuit using capacitors. (4)
d) Explain one method other than the use of capacitors by means of which power factor correction may be effected. (4)
Q3. What is soft starting of an Induction Motor? Describe with a circuit using thyristors used for soft starting. Discuss its advantages and disadvantages. (16)
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