DEA unit 1 ASS6

What is the main purpose of wave winding in a motor?

• a) To reduce the cost of the motor

• b) To increase the efficiency of the motor

• c) To increase the starting torque of the motor

• d) To increase the power factor of the motor

In a wave winding, how many coils are there per pole?

• a) One

• b) Two

• c) Three

• d) Four

What is the advantage of wave winding over lap winding?

• a) It provides better commutation

• b) It has a higher power factor

• c) It provides a higher torque

• d) It is cheaper to manufacture

How many brushes are required for a wave-wound motor?

• a) One

• b) Two

• c) Three

• d) Four

What is the difference between a wave winding and a lap winding?

• a) The number of coils per pole

• b) The direction of current in each coil

• c) The position of the brushes

• d) The type of insulation used in the coils

What is the main disadvantage of wave winding?

• a) It has a lower power factor than lap winding

• b) It requires more copper wire

• c) It has a lower torque than lap winding

• d) It produces more heat than lap winding

What is the effect of increasing the number of poles in a wave-wound motor?

• a) It increases the speed of the motor

• b) It decreases the speed of the motor

• c) It increases the torque of the motor

• d) It decreases the torque of the motor

In a wave winding, how many coils are connected in series between brushes?

• a) One

• b) Two

• c) Three

• d) Four

What is the difference between a simplex wave winding and a duplex wave winding?

• a) The number of brushes used

• b) The number of coils per pole

• c) The direction of current in each coil

• d) The position of the brushes

Which type of winding is used in high-speed motors?

• a) Lap winding

• b) Wave winding

• c) Combination winding

• d) Shunt winding