Electrical EngineeringProgrammable Logic Controller Lab →List Of Experiments

Develop a ladder program for DOL Starter

1. DOL stands for
a) Digital on line starter
b) Direct on line switch
c) Direct on line starter

2) A DOL motor starter contains---------- for protection purpose.
a) Relay
b) Switch
c) Over load relay

3) For starting of an electric motor ----------is preferred
a) normally open (NO) switch
b) normally open (NO) push button
c) normally closed (NC) push button

4) ------------ is the criteria to limit the use of DOL starter
a) High inrush current
b) Armature Current
c) Size of the motor

5) In which of the following applications DOL starter can be used
a) Conveyor belts
b) Water pumps
c) Both a and b