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WorksheetsMOdule 3
Total questions: 10
Worksheet time: 5mins
What is the full form of MCB?
Miniature contact breaker
Mini circuit breaker
Miniature circuit breaker
Mini contact breaker
Which type of material is commonly used in the contact of mechanical relay
copper
aluminium
silver
Platinum
Which of the following fuses can be reset automatically after cooling down
Glass fuse
Poly Fuse
MCB
Ceramic Fuse
Main Function of relay in an electric circuit is
To Open and Close circuit
To amplify Voltage
To store charge
To convert AC to DC
Which of the following not characteristics of solid state relay
No moving parts
Long life span
High switching speed
Noise Immunity
MCB's are primarily used for protecting which type of electrical system?
Low power electronic devices
Residential and commercial wiring
Small appliances only
Automobiles
What triggers an MCB to trip?
When the voltage is too low
When the current is exceeds its rating
When a mechanical fault occurs
When the resistance is too high
How does a poly fuse differ from regular fuse?
It does not reset
It is cheeper
It can reset multiple times
It offer no overload protection
Which Material commonly used for making fuse elements?
Copper
Aluminium
Tin-Lead alloy
Silver
Which of the following is characteristics of fuse
Reusable
single use
Self resetting
High cost
