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Questions in engineering

[Done] What quality allows a compressor to move refrigerant throughout a refrigeration system? A. Capacity B. Load C. Temperature range D. Refrigerant type

[Done] A reach-in with cap tube has the following conditions: • Subcooling is 6° NORMAL • Superheat is 0° LOW Which of the following could cause this condition? A. Overcharge B. Undercharge C. Restricted cap tube D. Dirty condenser

[Done] The upper temperature for the flue gases of a natural-draft furnace is A. [tex]$400^{\circ} F$ B. $250^{\circ} F$ C. $600^{\circ} F$ D. $700^{\circ} F$[/tex]

[Done] A draft diverter would be found in a(n) A. condensing furnace B. natural-draft furnace C. induced-draft furnace D. oil furnace

[Done] A 15kV medium voltage feeder line can stretch up to a. 45km b. 90km c. 100km d. 130km Which kV lines are called medium voltage Distribution?

[Done] Which of the following is recommended for the maintenance and care of a screwdriver? A. Periodically harden with a torch. B. File by hand to dress the tip. C. Shape the tip with a grinder. D. Reshape the tip with a hammer.

[Done] What is the function of a metering device in a refrigeration system? Meters refrigerant vapor into the compressor Increases the pressure of liquid refrigerant into the condenser Vaporizes all liquid refrigerant before it enters the evaporator Reduces the pressure and saturation temperature of liquid refrigerant

[Done] If a vehicle is equipped with two drive motors, rated at 250 kW and 291 kW respectively, what is the total power rating for the vehicle? A. 41 kW B. 250 kW C. 291 kW D. 541 kW

[Done] A crate required 900 newtons (N) of force to lift. The crate was lifted by a forklift with an engine that provided 225 N of force. What is the mechanical advantage of the forklift? A. 0.25 B. 4 C. 1,125 D. 202,500

[Done] The temperature range of the flue gases in an induced-draft furnace is [tex]$\qquad$[/tex]. A. [tex]$90^{\circ} F$[/tex] to [tex]$100^{\circ} F$[/tex] B. [tex]$101^{\circ} F$[/tex] to [tex]$274^{\circ} F$[/tex] C. [tex]$401^{\circ} F$[/tex] to [tex]$600^{\circ} F$[/tex] D. [tex]$275^{\circ} F$[/tex] to [tex]$400^{\circ} F$[/tex]