single phase induction motors objectives questions Phase-2

Q1:-Which of the following motors is used in a situation where load increases with speed

1. Hysteresis motor
2. Three-phase series motor
3. Induction motor
4. None of these.

ANSWER:-2

Q2:- Which of the following single-phase motors is generally used in time phonographs?

1. Shaded pole
2. Capacitor start
3. Resistance start
4. Capacitor start capacitor run motors

ANSWER:-1

Q3:- The repustion start induction run motor is used because of 

1. High efficiency
2. High starting torque
3. Minimum cost
4. Good Pf

ANSWER:-2

Q4:- The speed load characteristics of a universal motor is same as that of?

1. Dc shunt motor
2. Dc series motor
3. Ac motor
4. None of these

ANSWER:-2

Q5:- Which of the following motors has highest starting torque?

1. Split phase motor
2. Shaded pole motor
3. Capacitor start motor
4. Repultion motor

ANSWER:-3

Q6:- An induction regulator is used to

1. Regulate line voltage
2. Regulate speed of induction motor
3. Generate ac voltage
4. None of these

ANSWER:- 1

Q7:-Which of the following motors is used for unity Pf ?

1. Squirrel- cage induction motors
2. Slip ring induction motor
3. Hysteresis motor
4. Schrage motor

ANSWER:-4

Q8:- The rotating part of an Ac motors is called the

1. Stator
2. Rotor
3. Running winding
4. Starting winding

ANSWER:-2

Q9:- The squirrel- cage winding of a single-phase motor is placed in the

1. Armature
2. Stator
3. Rotor
4. Field

ANSWER:-3

Q10:- NEMA standards rate motors according to 

1. Frame number
2. horse power
3. voltage
4. weight

ANSWER:-1