Answer Happy

Problem 6 Consider figure below and (a) connect the motor in star and (b) then connect the motor to the ac supply. (6) Three Phase AC Supply Diue (C2) R2 Y1 R1 Three Phase Induction Motor Problem 7 (a) Consider the figure below and show how you will you connect the power meter to measure the current and voltage in the yellow phase. (3) Three Phase AC Supply 81 82 Three Phase Induction Motor Red (A2) 82 -0₂ CT Power meter
(b) Consider the figure below and show how you will you connect the power meter to measure the current and voltage in the blue phase. (3) Three Phase AC Supply Three Phase Induction Motor Problem 8 Which losses are obtained from the free run test (open circuit test) performed on an induction machine? (2) Problem 9 Which losses are obtained from the block rotor test (short circuit test) performed on an induction machine? (2) Problem 10 Are the iron losses constant at all speeds? (1) Problem 11 Are the friction losses of the machine linear? (1) Problem 12 Do the copper losses stay constant for an induction machine? (1) All the values of resistance and reactance are in ohm and Power in Watt. Problem 13 (a) The value of the stator resistance. (b) The values of the rotor resistance referred to the stator. (c) The value of the stator leakage reactance. (6) (d) The value of the rotor leakage reactance referred to the stator. (2) Problem 14 (4) (a) The value of the core loss component. (b) The value of the magnetizing component. (5) TOTAL 55 0