In hospitals, schools, and prisons, electrical heat trace systems are used for _____.
a. temperature maintenance of domestic hot-water pipeline systems
b. viscosity control on chemical pipelines
c. thermal regulation
d. moisture control on air lines
a. temperature maintenance of domestic hot-water pipeline systems
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The signal that alerts the misfire monitor that a misfire may be occurring is provided by the:
A. The MAP sensor B. The knock sensor. C. The camshaft position sensor D. The crankshaft position sensor.
The probability that a computer running a certain operating system crashes on any given day is 0.1. Find the probability that the computer crashes for the first time on the twelfth day after the operating system is installed.
What will be an ideal response?
Emergency generators generally ____________________
A. provide power to the entire building B. provide power to emergency equipment, emergency lighting and elevators C. provide power to all equipment as selected by the chief engineer D. none of the above.
What is the power transformer based on?
A. Current transformation B. Voltage transformation C. Iron-core transformation D. Impedance transformation