Explain the power rating of a bulb, say 60W, what if the
voltage changes
Answer Posted / md. obaydur rahman
All the above answers are wrong because we know that for a
constant power rating,
P=V*I
i,e. I=P/V
From the above equation we can see that if the voltage
changes the current is also changed for a constant power
rating i,e. if voltage reduced the device draws more current
to consume its power rating and vice versa.
Is This Answer Correct ? | 6 Yes | 7 No |
Post New Answer View All Answers
what does a string of resistors in a series will do?
previous year paper of ntpc bhel for degree in electrical enng
Is it true that in the 3 phase transformer, the limbs of the core are at 45 dgrees to each other. if true, why?
In three pin plug 6 amp. 220V ac rating. Why earth pin diameter is higher than other two pin? What its purpose ?
why does rotor rotets?
how to calculate the lightning arrester conductor @ no of earth pits required
ELECTRICAL DRIVES: can a motor load system with passive load torque can have equilibrium speed in second quadrant
If not into production, how far did you follow the design and why did not you see it into production?
why we use Test Terminal Block in 11 KV and 33 KV electrical panels.
what is the purpose of high speed earth switch in gas insulated substat
What is dynamo function in DG sets and draw block diagram?
What are the different types of transformers?
What is an Air COmpressor
what is the defination of Cable database? What are the points are considered while preparing cable database? Is there any sample available for cable database?
Explain the working principle of Synchronous Generator and Assynchronous generator?