WorksheetsSurprise Quiz - II
Total questions: 10
Worksheet time: 5mins
Which of the following is NOT a component of a residential electrical system?
Distribution board
Earthing system
Transformer
Circuit breakers
The total connected load for a small residential building is usually expressed in_______.
amperes
volts
watts
kVA
In a residential wiring system, which wire color is used for the live (phase) conductor as per standard codes?
Red
Green
Blue
Black
What is the function of a Residual Current Circuit Breaker (RCCB) in residential electrification?
Protect against electric shock and leakage current
Prevent short circuits
Control voltage fluctuations
Reduce power consumption
Which of the following wiring methods is most suitable for concealed wiring in residential buildings?
Cleat wiring
PVC conduit wiring
Open wiring
Surface conduit wiring
The number of power sub-circuits required in a residential building depends on______.
total load demand
wiring method used
Number of floors
Type of earthing used
What is the purpose of a distribution board (DB) in residential electrification?
Converts AC to DC
Distributes electricity safely to different circuits
Stores electrical energy
Measures power consumption
Why is it necessary to select a higher-rated main switch than the calculated load?
To prevent overload and ensure future expansion
To reduce the cost of wiring
To improve voltage fluctuations
To make installation easier
According to standard electrical guidelines, what is the recommended safety margin when selecting the main switch rating?
50% of total load
25% of total load
10% of total load
5% of total load
For a small residential house, the main switch should have a minimum rating of________.
16A
63A
32A
100A
