Electronics and Communication Engineering - Measurements and Instrumentation - Discussion
Discussion Forum : Measurements and Instrumentation - Section 1 (Q.No. 8)
8.
A single phase energy meter has the rating 1200 resolutions/ kWh. If a 500 W electric gadget is used for 4 hours, the energy meter will make
Answer: Option
Explanation:
0.5 x 4 = 2 kWh = 2 x 1200 revolutions.
Discussion:
7 comments Page 1 of 1.
Manjunath said:
7 years ago
1200--->1kwh.
?---->500w 4h.
500w=0.5kw.
0.5kw*4h=2kwh.
12000--->1kwh.
?---->2kwh.
Ans=> 2400.
?---->500w 4h.
500w=0.5kw.
0.5kw*4h=2kwh.
12000--->1kwh.
?---->2kwh.
Ans=> 2400.
TOMAS said:
8 years ago
@Swapnil.
Converting Watts to KiloWatts. In 1KW there is 1000watts So, 500W(1KW/1000WATTS) = 0.5.
Converting Watts to KiloWatts. In 1KW there is 1000watts So, 500W(1KW/1000WATTS) = 0.5.
Swapnil said:
8 years ago
What's the process of 500/1000? Please explain.
Karthik said:
9 years ago
Here in question they have given 1200 revolutions per kwh.
Power = 500 watt time = 4 hrs.
To convert watt to kilo watt we have divide with 1000 then we get as 500/1000 = 0.5 kw.
Kwh = 0.5x4 = 2 and 2xno.of revolutions per kwh = 2x1200 = 2400 revolutions.
Power = 500 watt time = 4 hrs.
To convert watt to kilo watt we have divide with 1000 then we get as 500/1000 = 0.5 kw.
Kwh = 0.5x4 = 2 and 2xno.of revolutions per kwh = 2x1200 = 2400 revolutions.
RAM said:
10 years ago
Energy = Power x Time.
Zulfiqar said:
1 decade ago
500 w converted into Kw i.e 500/1000 = 0.5 kw.
Saravana said:
1 decade ago
Can you explain this question clearly what is 0.5 in this prob?
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