An ideal refrigerant should be:
A. non-combustible
B. non-toxic
C. have convenient freeze/ boil temperatures
D. all of the above
Answer: D
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A ____ is a collection of nodes in which the segments are geographically dispersed and the physical link is often a data communications channel provided by a public carrier.
A. LAN B. server C. web site D. WAN
The subsequent problems deal with the switched RC circuit below. Assume that the capacitor has no charge to begin with, and assume that VA and VB are constant dc voltages.
A long time after the switch has been closed (i.e., the circuit is in steady state), what is the correct expression for VC, given the polarity shown?
A. 0 B. VA ? VB C. VA D. VB ? VA E. VB
Technician A says that intercoolers are used in turbocharger systems to cool the turbo bearings. Technician B says that some intercoolers are water cooled. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
Which mode of operation results in a richer air-fuel mixture near the spark plug?
A) Stratified B) Stoichiometric C) Homogeneous D) Knock protection