Numerical - Highest and lowest permissible voltage for given voltage of system

Q.  If the voltage of the system is about 230 V, then what would be the highest and the lowest permissible voltage?
- Published on 23 Nov 15

a. 242 and 214 V
b. 240 and 210 V
c. 244 and 216 V
d. 244 and 212 V

ANSWER: 244 and 216 V

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