How does an energy-recovery wheel improve system efficiency?
A) By keeping the evaporator clean
B) By moving some of the system refrigerant with a turbulator
C) By reducing the condenser head pressure
D) By transferring heat between the ventilation air and the exhaust air
D
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Find angle x in the accompanying figure. All dimensions are in inches. Give your answer to the nearest minute.
A. 14o13' B. 15o14' C. 16o15' D. 17o16'
____ help engineers determine how much earth must be moved and how much land must be purchased when a road is to be built.
A. Contour drawings B. Profile-curved line drawings C. Cut-and-fill drawings D. Plan and profile drawings
Technician A says that some piston rings have chamfers or reliefs cut into them to cause them to twist. Technician B says that chrome rings should not be used in out-of-round cylinders. Who is right?
A. ?Technician A only B. ?Technician B only C. ?Both A and B D. ?Neither A nor B
The projection from one or both faces that occurs in some gears is called the bore.
Answer the following statement true (T) or false (F)