Water heating can be provided by ground source heat pumps through a ____, a device that recovers excess heat from the cooling and heating process, diverting it to heat water in a storage tank very efficiently.
A. desuperheater
B. maxiheater
C. supermax heater
D. deep-heater
Answer: A
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The circumference of a circle (C) equals?(approximately 3.1416) times the diameter (d) of the circle, C =?d. Determine d when C = 415.6 millimeters. Round the answer to 2 decimal places.
A. 1305.65 mm B. 132.88 mm C. 132.29 mm D. 26.56 mm
A MAF sensor on a General Motors 3800 V-6 is being tested for contamination. Technician A says that the sensor should show over 100 grams per second on a scan tool display when the accelerator is depressed to WOT (wide open throttle) on a running engine. Technician B says that the output frequency should exceed 7000 Hz when the accelerator pedal is depressed to WOT on a running engine. Which
technician is correct? A) Technician A only B) Technician B only C) Both technicians D) Neither technician
After any repair or part replacement, the most important thing you must do is:
A) Document your work in a logbook. B) Clean up the equipment used in the repair. C) Recheck the system to be sure the concern has been resolved. D) Dispose of any worn parts or components.
What type of gas production is a definite indication of incomplete combustion?
A) CO2 B) O2 C) N D) CO