What is (are) the type(s) of flow restrictor(s)? 1. Fixed-orifice 2. Adjustable, multiple-orifices 3. Compensated orifice 4. Non-compensated orifice
a. 1 c. 1, 2, 3, and 4
b. 2 d. 1 and 2
ANS: D
There are two types of flow restrictors: fixed-orifice and adjustable, multiple-orifice models. The adjustable, multiple-orifice flow restrictor uses a series of calibrated openings in a disk that can be adjusted to deliver different flows.
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