T10 QUIZ Some important question

Q1:-Name of 1-phase motors.

Ans:- names of 1-phase motors are giving bellow

1. capacitor start induction motor
2. permanent capacitor motor
3. capacitor start capacitor run motor
4. shaded pole motor
5. universal motor

Q2:-Why capacitor is installed in 1-phase motor and which winding it have?

Ans:- for increasing the starting toque, and it is put series with starting winding.

Q3:- After starting a 1-phase motor starting winding not disconnected then?

Ans:- Motor's staring winding will be burn with humming noise with in few mint.

Q4:- The range of capacitor used in ceiling fan and table fan 

Ans:- 2 to 2.5 microF

Q5:-If fan speed is reversed with slow speed what may be problem with?

Ans:- capacitor burn out

Q6:- where centrifugal switch is put in 1-phase motor why?

Ans:- in series with starting winding it installed . when motor pick up it's speed 70% to 75% then centrifugal switch disconnect the starting winding

Q7:- Staring winding have  in 1-phase induction motor?

Ans:- high resistance 

Q8:- What is the aim of compensating winding ?

Ans:- compensating winding is used to improve commutation.

Q9:- The difference b/w starting winding and running winding?

Ans:- 90 degree (Electrical)

Q10:- Motors used in 

Ans:- some motor's used given below

1. Lathe m/c              -  capacitor start induction motor
2. Freez                     -  capacitor start capacitor run motor
3. Room Cooler        -   permanent capacitor motor
4. Mixi                      -   universal motor
5. Portable hand dril -   universal motor  
6. Hutter syren          -   universal motor