The number of British thermal units that are changed into useful work is 1,700. The number supplied is 4,300 Btu. What is the thermal efficiency to the nearest whole percent?
A. 30%
B. 35%
C. 40%
D. 45%
Answer: C
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How are checklists used to troubleshoot problems.
What will be an ideal response?
The subsequent problems deal with the circuit shown below. Assume that the diode is ideal (i.e., has a 0V forward bias voltage).
If VA=5V and VB=2V, and there is a switch that turns on both voltage sources at the same time, and there is no charge on the capacitor initially, what is voltage VD immediately after the switch is closed (i.e., the circuit is not in steady state yet)?
A. ?3 V B. 3 V C. ?2 V D. 0 E. 2 V
Certifications are most easily separated into three categories: the buildings themselves; the people who ____ those buildings; and the products used in the process.
A. design and build B. live in C. build D. evaluate, build, and remodel
The Commercial Driver's Handbook suggests several things to do when you pass a vehicle. Which of these is NOT one of them?
a. Lightly tap your horn.
b. Assume the other driver does not see you.
c. Drive carefully to avoid a crash.
d. At night, turn on your high beams before you start to pass and leave them on until you have completely passed the vehicle.