Packing front wheel bearings is being discussed. Technician A says it is not necessary to repack the inner bearing since it is protected by the grease seal. Technician B says the grease seal should be replaced whenever the bearings are repacked or replaced. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer: B
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Answer the following statement(s) true (T) or false (F)
1. Magnetic starters can be controlled remotely. 2. The magnetic flux produced by the shading coil follows the direction of the flux of the main field. 3. Overvoltage produces low coil currents. 4. All overload relays must allow some period of time before tripping to allow the motor to start. 5. The NEC® requires that each phase of a motor be protected by an overload relay.
Often in residential construction, load-bearing walls of an upper floor may not line up with the bearing walls of the floor below.
Answer the following statement true (T) or false (F)
A parts dealer has a markup of 34%. The dealer purchases $627.00 worth of parts. What would be the selling price for th?ese parts?
Fill in the blank(s) with the appropriate word(s).
The ENERGY STAR® label is awarded to those split system air-to air units with EERs of ________ or greater, SEERs of ________ or greater and HSPFs of ________ or greater
A) EER 12, SEER 14.5 , HSPF 8.2 B) EER 16, SEER 22, HSPF 13 C) EER 11, SEER 14, HSPF 8 D) EER 10, SEER 13, HSPF 7.7