In order to reverse the direction of rotation of a 3-phase induction motor

Machine Design Mcqs
BILAL KHATTAK0

A.Motor should eb replaced
B.Supply voltage should be cut off in one phase
C.Power factor should be changed
D.All the three phases should be interchanged
E.Any two phases should be interchanged

Related Mcqs:

  1. An induction motor meant for operation on 60 cycles per second is connected to a supply having 50 cycles per second. What will happen
  2. In induction hardening
  3. Engine starter motor is
  4. A circulating water pump of a condenser is of the centrifugal type and directly connected to a three phase induction motor running at 900 rpm. The pump delivers 30,000 litres per minute against the dynamic head of 10 m. The horse power of the motor required to drive the pump would be
  5. The power factor of a 3 phase induction motor will be least
  6. The power factor of a three phase induction motor at no load will be
  7. For traction applications, the type of motor best suited is
  8. The power factor of a 3 phase induction motor near full load is expected to be around
  9. A 3 phase 15 kW induction motor has a p.f. of 0.75 lagging. A bank of capacitor is connected in delta across the supply terminals and p.f. raised to 0.9 lagging. The KVAR rating of the capacitors connected in each phase will be nearly
  10. Which of the following motor can operate on lagging as well as leading power factor?

Leave a Reply

Your email address will not be published. Required fields are marked *