A technician needs to check the heating operation of a heat pump that has no gauge access ports. The technician should start by:
A) Check the temperature rise across the indoor coil.
B) Recovering the system refrigerant using piercing pliers and installing permanent braze on service valves.
C) Installing bolt on piercing valves on both the gas line and the liquid line.
D) Installing bolt on piercing valves on both the high side and low side of the compressor.
A
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When discussing induced voltage caused by a magnetic field moving across a complete circuit, technician A says that the direction of current flow depends on the direction of movement of flux lines. Technician B says that the direction of current flow is called polarity. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Soil texture is to particle size as ________ is to particle arrangement in the soil
Fill in the blank(s) with correct word
A computer's internal memory consists of:
A) mass memory. B) semiconductor devices. C) static memory devices. D) Both B and C
In a mechanical governor what forces act on the thrust lever?
A. Centrifugal force and spring force. B. Pneumatic and spring force. C. Centrifugal and centripetal force. D. Hydraulic and spring force.