Syllabus_Continuous Evaluation_ 5TH SEM_Electrical Machines – II _(3150910)_quiz_2_(04/08/2020)

GOVERNMENT ENGINEERING COLLEGE, BHARUCH

ELECTRICAL ENGINEERING DEPARTMENT

B.E.  5th Semester: 2020

QUIZ-2 SYLLABUS (Continuous Evaluation)

SUB: Electrical Machines – II (3150910)

1.     Induction Machines:             

Construction, types of induction motor (squirrel cage and slip-ring), concept of rotating magnetic field, working principle, Slip, Frequency of Rotor Current, Relation Between Torque and Rotor Power Factor, Starting Torque, Starting Torque of a Squirrel-cage Motor, Starting Torque of a Slip-ring Motor, Condition for Maximum Starting Torque, Effect of Change in Supply Voltage on Starting Torque, Rotor E.M.F. and Reactance Under Running Conditions, Torque Under Running Conditions, Torque-speed characteristic  of an induction motor.

 

2.     Alternators:

    Constructional features, cylindrical rotor synchronous machine generated EMF, equivalent circuit and phasor diagram, armature reaction, synchronous impedance, voltage regulation. Methods to find voltage regulation: Synchronous impedance method.