Which of these is TRUE about checking bearing clearances using Plastigage?
A) The wider the strip means the narrower the oil clearance
B) The journal should be clean and oil free
C) The cap should be torqued to factory specifications
D) All of the above
D
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Where are electric auxiliary heat strips normally located in air source heat pumps?
A) Next to the indoor coil to keep it warmer when the heat pump capacity drops B) In the return air, before the coil C) Next to the outdoor coil to keep it warmer in cold weather D) In the discharge air of the fan
The IRC requires all habitable rooms to have a glazing area equal to ____ of the room's floor area and that half of the area used to provide light also be openable to provide ventilation.
A. 2% B. 8% C. 12% D. 20%
What are jack bolts used for?
A. positioning machinery during alignment. B. raising machinery up for repair. C. to help prevent shaft from turning. D. for mounting coupling jack.
The key on the calculator used to change the sign of a number is called:
A. Plus/minus key B. Negative number key C. Reverse key D. Subtract key