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Question 2
(a)
Describe the importance of measuring the insulation resistance(IR)
3 marks)
(4 marks)
1
(b)
With the aid of a diagram explain the operation of continuous Uninterruptible Power Supply(UPS)ac supply system.
6marks
(a) A 20A motor operates from a 220 Vinsulated system.The supply cables have a total impedance of 0.02Q.Determine the circult current it
An open circuit fault
i.
An earth fault A short circuit fault
m.
8 marks)