8 questions Advanced

ECADEMY test

Introduction to temperature control

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

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Question 3 of 8 Advanced

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

Question 4 of 8 Advanced

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

Question 5 of 8 Advanced

5 What is the expected payback time of an investment in system optimisation?

Question 6 of 8 Advanced

6 How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?

Question 8 of 8 Advanced

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

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: Which component is often ‘the weakest link’ in centrifugal pumps?
A: Shaft seal
Correct
Q: How high is the suction lift of the self-priming CM pump?
A: Up to 8 metres
Correct
Q: What is the expected payback time of an investment in system optimisation?
A: 1-5 years
Correct
Q: How do you prevent pumps from malfunctioning when transporting hot water with a temperature of well above 120C°?
A: Equip the pump with double-shaft seals or air-cooled top.
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