Technician A says that retrofitting a system is simply a matter of recovering the R-12 and recharging it with a drop-in refrigerant. Technician B says that the charge level specification is the same with R-134a as with R-12. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians
D) Neither technician
D) Neither technician
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For the following mechanical lever system, construct the block diagram model and find the transfer function, x/f.
What will be an ideal response?
Which of the following is a medical emergency and requires immediate medical attention?
A. Hypothermia B. Heat Stroke C. Heat Exhaustion D. a and b
Which of the following is NOT a form of energy used in an automobile?
A) Mechanical B) Electrical C) Coolant D) Chemical
Why do direct spark ignition furnaces and hot surface ignition furnaces require redundant gas valves?
A) in case one fails to open, the other will B) so that the unit will not overheat C) because they require more fuel D) for safety since there is no pilot safety solenoid