Most fires are caused by ____
A) animals
B) people
C) lightning
D) railroads
B
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Modern residential oil furnaces sense the flames using
A) A cadmium sulfide cell B) A thermal sensing stack switch C) Flame rectification D) Ultraviolet light sensors
Which of these statements concerning the SAE flare fittings used on hydraulic brake systems is TRUE?
A) Have a 45-degree taper on the male part of the fitting B) Have a 20-degree taper on the male and female parts of the fitting C) Have no taper on the female part of the fitting D) Must be single flared
Obtain a relation for the time required for a lumped system to reach the average temperature
, , where Ti is the initial temperature and T? is the temperature of the environment.
What will be an ideal response?
A solid-state phase monitoring relay provides protection in the event of a(n) ____.
a. power failure b. power brownout c. abrupt startup d. voltage unbalance