Describe air and its composition
What will be an ideal response?
ANS:
Air is a colorless, odorless, and tasteless mixture of gases. It occurs in the atmosphere around the Earth and is composed of approximately 78 percent nitrogen, 21 percent oxygen, and a 1 percent mixture of argon, carbon dioxide, neon, helium, and other gases.
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Referring to the following figure, assuming that fuse F8-C should be supplied with 12V when the park lamps are on, if neither mirror lamp illuminates with the headlamp switch in the ON position then this could be an indication to the operator that he does not have any trailer tail lamps.
Answer the following statement true (T) or false (F)
The ____ of the span table is the size and spacing of the framing lumber.
A. bottom B. top C. right side D. left side
The subsequent problems deal with the circuit below where all voltage sources are dc and the circuit is assumed to be in steady state. Also, R1 = R2 = R3 = R4 = R.
If R3 is replaced by an closed (short) circuit and I2 is known, the current through R2 will be
A. I2 / 2 B. 0 C. ?I2 D. I2 E. 2I2
A circuit with a short to voltage may cause ________
A) Other circuits to malfunction B) Improper operation of loads in the circuit C) Both A and B D) Neither A nor B