Q.1
How many number of insulation classes are present with respect to electrical equipment?
  • a) 5
  • b) 6
  • c) 7
  • d) 8
Q.2
How many classes have their temperatures above 100°C?
  • a) 5
  • b) 6
  • c) 7
  • d) 8
Q.3
How many classes have their temperatures above 150°C?
  • a) 2
  • b) 3
  • c) 4
  • d) 5
Q.4
Which class has the lowest and the highest temperature?
  • a) Class Y, Class C
  • b) Class Y, Class H
  • c) Class H, Class C
  • d) Class B, Class H
Q.5
Class A has higher temperature than Class E.
  • a) True
  • b) False
Q.6
What is the temperature of Class B?
  • a) 120°C
  • b) 130°C
  • c) 155°C
  • d) 180°C
Q.7
Which among the following is the example of Class Y?
  • a) Varnish
  • b) Insulation oil
  • c) Paper
  • d) Resins
Q.8
Which among the following is the example of Class B?
  • a) Inorganic material with adhesives
  • b) Hard fiber
  • c) Wood
  • d) Impregnated oil
Q.9
Which among the following is an example of Class F?
  • a) Paper lamination
  • b) Nitrile rubber
  • c) Asbestos
  • d) Silicone
Q.10
Silicone rubber is an example of Class H.
  • a) True
  • b) False
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