What is valve margin?

A. The dimension between the valve seat and the flat face of the valve head mushroom.
B. The ratio of the total valve head surface to seat surface.
C. The outer diameter of the valve head.
D. The length of the valve stem.


Answer: A

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A. Technician A B. Technician B C. Both A nor B D. Neither A nor B

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As the latent heat of condensation is transferred to the airstream in the condenser, the refrigerant makes the change into a ________.

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What will be an ideal response?

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