In an area where there is smoke or pollution, what is the recommended number of air exchanges per hour?
Fill in the blank(s) with the appropriate word(s).
30 or more
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While agriculture is a science, it is not an important part of science as a whole
Indicate whether the statement is true or false
Compute the countercurrent traveling time of the induction machine assuming that the motor is running at no load.
A 480 V, 60 Hz, three-phase induction motor has a rated speed at full load of 1720 rpm, stator resistance of 1 ?, rotor resistance of 1 ?, and equivalent winding reactance of 4 ?. Compute the starting time of the motor at no load and at full voltage and frequency. The inertia of the motor is 3 Nm sec2.
When installing a harmonic balancer, the hole in the balancer is smaller than the crankshaft so it must be put on by pressing it. What type of fit is this?
What will be an ideal response?
Technician A says camshafts control the operation of the valves. Technician B says camshafts control the timing of the valves. Who is correct?
A. Technician A B. Technician B C. Both A and B D. Neither A nor B