ELECTRO 3 - SYNC, 1P, MOT STARTER

What is the amount of slip in 3P AC Synchronous Motor?

• 0%

• 5%

• 8%

• 13%

Which of the following motors is NOT self-starting motor?

• Synchronous speed

• Squirrel Cage

• shaded pole

• universal motor

Universal Motor is so called because ______________

• they can run on either AC or DC

• they are used almost everywhere

• they are cheap

• they are the most commonly used motor

The most commonly used or type of AC motor is the _______________

• induction motors

• synchronous motor

• DC motor

• BLDC Motor

Large Synchronous motors are not self-starting machines. They must be primed by a small AC induction motor which is also called ______________

• pony motor

• slave motor

• mini motor

• support motor

Synchronous motors always rotate at synchronous speed regardless of the load applied

• true

• false

• it depends on how much load is applied

• not always but also depend on the surrounding conditions

During the start phase, a typical AC Induction Motor can draw as much as _______________

• 600%-800% of the full-load current

• 100%-200% of the full load current

• 10,000%-20,000% of the full load current

• 50%-80% of the full load current

In WYE-DELTA Motor Starter, how many contactors are needed to operationalize the circuit?

• 3 contactors

• 2 contactors

• 1 contactor

• 5 contactors

Which component of the motor control circuit is used to determine the operating status of the circuit?

• pilot lamps

• push buttons

• contactor

• overload relay

Which type of relay is used to protect the motor from overload conditions?

• overload relay

• contactor

• contact relay

• circuit breaker