What are some of the features of a thermostat?
What will be an ideal response?
3-minute compressor off time to prevent compressor short cycling
15-minute cycle timer to prevent the heating system from short cycling
15-minute cycle timer to prevent the second stage heat from starting up too soon
3-minute minimum on timer for staged heat
heat/cool set points of desired temperature
auto changeover from heat to cool and back
emergency heat mode for heat pumps
power on check
low voltage
error codes for thermostat operation, line voltage drops, and outdoor temperature sensor problems
outdoor temperature smart recovery, telling the system when to restart the equipment after night or day setback
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A low-head hydro system has a net resistance of 36 ?. It produces 900 W of power. What is the current in the system.?
Fill in the blank(s) with the appropriate word(s).
Sketch the stress-strain diagram of low-carbon (mild) steel, showing all of its important parts, and explain why steel should not be stressed beyond its yield stress.
What will be an ideal response?
Technician A says that the convex side of the ring gear is the drive side on most rear axle assemblies. Technician B says that the convex side of the ring gear is the drive side on differentials used in the front of many four-wheel-drive vehicles. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B
The idle air control (IAC) assembly on a GM TBI or PFI system is a/an _______________.
A. Stepper motor B. Stepper solenoid C. AC motor D. Permanent magnet motor