Electrical Engineering - Quantities and Units - Discussion

Discussion Forum : Quantities and Units - General Questions (Q.No. 5)
5.
The number of kilowatts in 135 milliwatts is
1.35 × 10–4 kW
135 × 10–3 kW
0.0135 kW
0.00135 kW
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
46 comments Page 5 of 5.

Keerthi said:   1 decade ago
1kw=10^3 w
1kw=10^6 mw
1mw=10^-6 kw
135 mw=135*10^-6
135 mw=1.35*10^-4
so ans is A.

Anand said:   1 decade ago
1 milliwatt=10^-3 watt.
135 milliwatt=0.135watt.
1kilowatt=1X10^3watt=1000 watt.
so the answer is in KW.
0.135Watt=1.35X10^-4 KW.(0.135/1000=0.000135watts)
so 0.000135watts=1.35X10^-4 Kilowatts

Karthik said:   1 decade ago
135 milli watts = 135 * 10^-3 watts
1 kilo watts = 10^3 watts

135 milli watts in killo watts

=135 * 10^-3 * 10^3 watts

(since 10^3 watts can be written as killo watts)

=135 * 10^-3 * killo watts

= 135 * 10^-3 KW

Kuldeep said:   1 decade ago
135 milliwatts= 135*10^-3 watts
we can write it as:
135*10^-3*10^3/10^3 watts=135*10^-6 kilowatts
135*10^-6 kilowatts= 1.35*10^-4

so answer is A

Praveen.c.b said:   1 decade ago
135milliwatts=.135watts
1kilowatts=1000watts
so 1 watt=.001kilowatts
so .135watts in kilowatts=.135/1000
=1.35*10^-4
so answer is A

Prashant said:   1 decade ago
135 milliwatts = 13.5 watts
now 1 kilowatt = 1000 watts
so 1 watt = 0.001 kilowatts

hence 135 milliwatts = 13.5 * 0.001 kilowatts
=> 13.5 * 10^-3 kW
=> 1.35 * 10^ -4
=> Ans= A


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