Technicians should know that fan speed is directly related to the amount of air a fan can move; therefore, doubling the fan speed will ________ the amount of air flow
A) Increase by 10% B) Triple C) Double D) Increase by 25%
C
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Ammeters should be connected ________ with the circuit being tested.
A) In parallel B) In series C) In opposition D) None of these
Which of the following can be used as an inexpensive alternative to a tee conduit body when running EMT?
a. A Myers hub b. A standard square box with a cover c. A mogul d. A gasketed SLB
When the load on the evaporator increases, the TXV:
a. Increases the flow of refrigerant. b. Decreases the flow of refrigerant. c. Maintains a steady flow of refrigerant. d. Adjusts the superheat up in the evaporator.
What should be done to unused inputs on TTL gates?
A) Unused AND and NAND inputs should be tied to Vcc through a 1k-ohm resistor; unused OR and NOR inputs should be grounded. B) All unused gates should be connected together and tied to Vcc through a 1k-ohm resistor. C) All unused inputs should be connected to an unused output; this will insure compatible loading on both the unused inputs and unused outputs. D) They should be left disconnected so as not to produce a load on any of the other circuits and to minimize power loading on the voltage source.