v=r*i this means when voltage increases current also
increases at constant resistance....
p=v*i this means when voltage increases current decreases to
maintain the power constant
which one is true...
Answers were Sorted based on User's Feedback
Answer / karthik raman.b
both r correct first case we can assume without load....second case we can assume with load the current is depends on the load if the load is increased the voltage drop will be high
Is This Answer Correct ? | 4 Yes | 1 No |
Answer / indra narayan chakraborty
the first statement is correct. When voltage increases current also increase at constant resistance.But the second statement is not true because current does not decreases instead the device burns out or the voltage can be maintained constant to maintain constant power.
Is This Answer Correct ? | 4 Yes | 3 No |
Answer / jahanbaz
Both are correct the first formula is for the voltage drop
while the second formula is for power.
1.if you increase current while maintaing the resistance
constant the voltage drop across it will increase or in
other word if you vary resistance while maintaing the
current constant the voltage drop will again vary.
2 for this case if u increase voltage maintaing the current
constant the power is increased or if u increase the current
while maintaing the voltage constant again u increase the power.
think a little bit about this matter and u will understand
the things with yourself
Is This Answer Correct ? | 1 Yes | 0 No |
Why is it that North America uses 60 hz frequency while Europe uses 50 hz?
Can we use droop CT in neutral in place of W phase of alternator ?
what is IMPEDENCE? FORMULE?
what is auto transformer
why we change the direction of winding in rotor ?how we make the north and south pole?
What is rotary phase converter?
what is real and reactive power?
what happen if transformer neutral not earth
what is the principal of starting of a three phase induction motor.
What is the temperature PROFILE OF A FLUID W. R. T. Distance from a sphere to which it is IN CONTACT which is at constant temp.?
why transmission is only 3 phase and not 2 or 4 or poly phases
For the requirement of a furnace of temperature range up to 1200 oC using silicon carbide rods, What is the required rate of transformer needed (please do it with all details)?