What type of compressor would you use in an instrument air system?
A. Axial compressor
B. Centrifugal compressor
C. Rotary compressor
D. Reciprocating compressor
A. Incorrect. The most common use for axial compressors is in jet engines used to power aircraft and some ships.
B. Incorrect. Centrifugal compressors are best suited for continuous-duty applications such as ventilation fans, air movers, cooling units, and other uses that require high volumes but relatively low pressures.
C. Incorrect. Rotary compressors are especially useful in applications where the operating conditions (flow/pressure) vary greatly.
D. Correct. A common application for the reciprocating compressor is an instrument air system.
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Arrange in chronological order the United States' acquisition of (A) Oregon, (B) Texas, and (C) California.
A. A, B, C B. C, B, A C. B, A, C D. B, C, A E. A, C, B
What would normal low and high gauge reading be on a 90° day?
A) 30 and 400 PSI B) 30 and 200 PSI C) 10 and 300 PSI D) 50 and 175 PSI
________ are vertical supports in panel doors
A) Rails B) Stiles C) Slots D) Dowels
Repeat Problem 9.9 for VB = 15 V. and VC = 10 V.
Problem 9.9
Consider the circuit of Figure P9.9. Determine whether the diode is conducting. Assume VA = 12 V,
VB = 10 V, VC = 5 V and that the diode is ideal.
