Answer the following statement(s) true (T) or false (F)
1. Star-delta motor starting is sometimes called double-delta starting.
2. Star-delta motors are similar in construction to standard squirrel cage motors.
3. Star-delta motors may be used where a reduced starting current is required.
4. A disadvantage of open transition starting is that it does not require accessory voltage reducing equipment.
5. Closed transition starting is accomplished by adding another three pole contactor and resistors to the circuit.
1. FALSE
2. TRUE
3. TRUE
4. FALSE
5. TRUE
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Which of the following is true of the term clearance volume?
A. Cylinder volume with piston at TDC B. Cylinder volume with piston at BDC C. Cylinder volume with piston removed D. Volume of a pre-combustion chamber
The purpose of a commutator in a dc generator is to:
A) provide filtration. B) keep current flowing in one direction. C) concentrate flux density. D) maximize the current generated.
The Occupational Safety and Health Act, or OSH Act, of 1970 mandates that employers provide safety and health training.