The type of roof labeled F is a _____.





a. gable roof

b. shed roof

c. gambrel roof

d. gable-and-valley roof


Answer: C

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For the motor in Problem 7.1 and for a constant-load torque equals to half the full- load torque, calculate the minimum supply frequency that will not allow the motor current to exceed the full-load current. Calculate the motor speed.

What will be an ideal response?

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With worm type reducers:

A. Proper lubrication is extremely important. B. Lubrication is important, but an advantage of the unit is that it can tolerate inadequate lubrication. C. No lubrication is necessary. D. Lubrication is necessary only on older units.

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That portion of the incomplete thread that is not fully formed at root or at crest and root, and is produced by the chamfer at the starting end of the thread forming tool.

A. Vanish thread B. partial thread C. washout thread D. thread runout E. all of the above

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Why is it necessary to have superheat in the refrigerant vapor leaving the evaporator?

What will be an ideal response?

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