1.
In a distribution system, __________ causes lamps to burn out permanently and may cause failure of other appliances.
A
Low permittivity
B
High resistance
C
High voltage
D
Low voltage
View Answer
Correct Answer: C — High voltage
Explanation:
The correct answer is C: High voltage.
- A good distribution system requires a proper voltage level at the consumer terminal.
- Voltage variations at the consumer terminal must be kept as low as possible.
- Changes in voltage are generally caused by variation of load on the system.
- High voltage causes lamps to burn out permanently and may cause failure of other appliances.
- The permissible voltage variation is ±5% of the rated voltage.