An AC system is being checked for proper cooling.
An AC system is being checked for proper cooling. Technician A says to turn on the AC system and operate the engine at 1500 to 2000 RPM for 5 to 10 minutes before checking the outlet temperature. Technician B says that the temperature can be checked as soon as 1500 RPM is reached. Which technician is correct?
A.Technician A only
B.Technician B only
C.Both technicians
D.Neither technician
A.Technician A only
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The Jensen Electric Co. fire alarm system uses a combination of smoke detectors and ____.
A. cameras B. sensor microchips C. manual pull handles D. keys
An AISI 304 stainless steel sheet is going through an annealing process inside an electrically heated oven. The ambient air inside the oven is 600°C, while the surrounding surfaces of the oven are at a uniform temperature of 750°C. If the emissivity of the stainless steel sheet is 0.40 and the average convection heat transfer coefficient is 10?W/m2•K, determine the temperature of the stainless steel sheet.
What will be an ideal response?
Which device is used in alternators to change AC to DC?
A) Transistor B) Diode C) Capacitor D) None of these
An amplifier that is biased so that the output current flows for less than half of the AC input cycle is operating as a ____ amplifier.
A. class A B. class AB C. class B D. class C