What are some of the safety features we check at startup?
What will be an ideal response?
E-stop, door interlocks for the safety cage, sensing mats, light curtains, and
any other devices that have a primary function of protecting your safety.
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Which is the most accurate means of testing the antifreeze protection level of a coolant?
A. hydrometer B. manometer C. litmus paper D. refractometer
When a diesel engine is operating at its best efficiency, how much of the potential heat energy of the fuel is converted into usable energy at the flywheel?
A. 30 % B. 40 % C. 70 % D. 80 %
A residential A/C system that cools in summer and heats in winter by reversing the flow of refrigerant is called a:
A) PTAC system. B) Stand-alone A/C system. C) Window unit. D) Heat pump.
Find the z transform of 
Compare this result with the z transform found directly by applying the time- shifting property to an impulse.