8 questions Advanced

ECADEMY test

29 - Introduction to temperature control

This course test contains 8 questions and can be retaken at any time.

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Question 5 of 8 Advanced

Which of the following isn’t one of the main benefits of the CM pump range?

Question 6 of 8 Advanced

How high is the suction lift of the self-priming CM pump?

Question 8 of 8 Advanced

Which component is often ‘the weakest link’ in centrifugal pumps?

Question 8 of 8 Advanced

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Correct
Q: Why is ammonia an efficient coolant?
A: Ammonia is able to absorb large amount of heat when it evaporates.
Correct
Q: Which load profile will benefit the most from a demand driven control system?
A: Low flow rate with relatively few peak periods during the day.
Correct
Q: How have temperature control systems traditionally been regulated?
A: Constant speed pumps and throttling valves regulating the amount of water entering the heat exchanger.
Correct
Q: Why does a cooling system that uses propylene glycol as coolant demand pumps with oversized motors?
A: The viscosity and density of propylene glycol is higher than tap water.
Correct
Q: Which of the following isn’t one of the main benefits of the CM pump range?
A: External control
Correct
Q: How high is the suction lift of the self-priming CM pump?
A: Up to 8 metres
Correct
Q: Which temperature control systems hold the greatest potential for optimisation?
A: Three way valve Regulated temperature control systems that adapts operation according to the load.
Correct
Q: Which component is often ‘the weakest link’ in centrifugal pumps?
A: Shaft seal