Electrical Circuit Design
Q1. During the starting phase of a star-delta starter, the motor windings are connected in which configuration?
a. Delta
b. Star
c. Series
d. Parallel
Q2. What is the main advantage of using a star-delta starter over a direct-on-line (DOL) starter?
a. Reduced starting current
b. Increased starting torque
c. Reduced running speed
d. Increased efficiency
Q3. After the motor has started and gained speed, the windings are switched to which configuration?
Q4. What component is responsible for switching the motor windings from star to delta configuration?
a. Overload relay
b. Main contactor
c. Timer
d. Start push button
Q5. What is the function of the overload relay in a star-delta starter circuit?
a. To start the motor
b. To switch between star and delta configurations
c. To protect the motor from overcurrent
d. To stop the motor
