What is an intermittent pilot ignition system?
A) a pulsing LED that indicates the burner activity
B) the gas pilot is ignited with each call for heat and shut off at the end of the call
C) a pilot light that only operates when the thermostat is not calling for heat
D) the gas pilot light only works correctly some of the time
Question 2
Face-to-face mounted angular-contact ball bearings are used in applications that _____.
a. allow for small amounts of misalignment
b. support heavy thrust loads
c. operate at high temperatures
d. only handle radial loads