What happens to the current draw as an electric heating element warms up?
What will be an ideal response?
As the electric heating element temperature increases, its resistance also increases and the current draw decreases.
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Energized conductors and circuit parts to which an employee may be exposed must be put into an electrically safe work condition before an employee _____.
a. works within the limited approach boundary b. crosses the restricted approach boundary c. works on energized components d. approaches the flash protection boundary
The heat input to the Otto cycle is nearest:
The pressure and temperature at the inlet to the ideal Otto cycle, with T-s diagram shown, are 100 kPa and 10ºC. The maximum temperature in the cycle is 1200ºC. Assume constant specific heats from Table below for all calculations.
A) 450 kJ/kg
B) 500 kJ/kg
C) 550 kJ/kg
D) 600 kJ/kg
The time rate of doing work is called
a. energy b. power c. force d. momentum
One watt of electrical energy is equal to _____ BTU of heat
A. 12000 B. 1000 C. 3.4 D. 1