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Question:
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Which of the fan has disc wheel within a ring casing or plate:
Propeller fan
Which of the following arrangement of fans will be used inorder to attain constant pressure, zero pressure and constant vacuum conditions:
Series Arrangement
While installation the exhaust fan and air intake opening are at _____ ends of the enclosure:
Opposite
Higher speed motors are usually quieter than low speed motors:
True
A direct drive type fan is less expensive, less noisy, more flexible and more adaptable to capacity change than belt drive fan
False
Fan speed delivery will vary ______ as the CFM ratio:
Directly
Brake Horsepower (bhp) on the fan motor (or air horsepower of the fan) will vary directly as the _____ of the rpm ratio:
Cube
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