Q2. (a) Describe, with the aid of a sketch, the principle of operation of a modern shaft torsion meter. (8)
(b) Explain why it is important in terms of hull efficiency to measure and compare shaft torque and speed. (2)
Q2. (a) Describe, with the aid of a sketch, an explosimeter for the detection of combustible gas. (6)
(b) Describe how the instrument sketched in part (a) is tested and calibrated. (4)
Q2. With reference to control systems, explain EACH of the following:
a) Two-step action (2)
b) Offset (2)
c) Gain (2)
d) Proportional action (2)
e) Integral action (2)
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