On tank vessels using an automatic tape well for gaging tanks, the hand clutch is used to __________.
• How an automatic tank tape works on a tank vessel • The purpose of a hand clutch on mechanical or motor-driven reels • Difference between measurement/gauging functions and calibration or adjustment functions
• Think about what part of the system the hand clutch actually controls: is it affecting the tape itself, the weight, the rod, or the drive mechanism? • Ask yourself: when you need to move or secure the tape, what mechanical action would a clutch normally provide? • Which of the choices sounds like a one-time or infrequent procedure (like calibration) versus a routine operating function of the tape reel?
• Recall what a clutch does in general mechanical systems (engages or disengages motion). • Identify which answer choices involve moving or stopping the tape versus changing its physical characteristics or the tank. • Eliminate any choices that sound like they would be done by a surveyor or engineer during setup, not by an operator during normal gauging.
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