Question

TIME: 8 HRS. MARKS: 250 Note: Attempt all questions. (50) 1. Identify the terminal of a 3 phase squirrel cage induction motor a) Draw the circuit diagrams to identify the for 50 marks terminals of a 3 phase squirrel cage induction motor b) Write the required tools, instruments, materials with specification and procedure steps to perform the above task. c)Identify the terminal of a 3 phase squirrel cage induction motor 2. Construct a bridge rectifier and test the wave shapes without filter and calculate ripple factor. (100) a) Draw the circuit diagram of a bridge rectifier and test the wave shapes without filter and calculate ripple factor. b) Write the required tools, accessories, materials with specification and sequence steps with safety measures for performing the above task. c)Assemble the circuit, test the wave shapes without filter, plot graph and calculate ripple factor. 3. Speed control of DC motors by field control method a) Draw the circuit diagram to perform speed control of DC motors by field control method b) (100 b) Write the required tools, instruments and consumable materials with specification an sequence procedure steps to construct half wave rectifier using semiconductor diode. Perform speed control of DC motors by field control method and plot graph c)​

Answer 1

Answer:

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