Solution:
For maximum power to be delivered from the generator (or internal reactance Xg) to the load (of reactance, XL),
⇒ XL + Xg = 0 (the total reactance must vanish)
⇒ XL= -Xg.
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$\text{F = Mg}$
$\text{F}=\mu\text{Mg}$
$\text{Mg}\leq\text{F}\leq\text{Mg}\sqrt{1+\mu^2}$
$\text{Mg}\geq\text{F}\geq\text{Mg}\sqrt{1-\mu^2}.$
How can we explain the reddish appearance of sun at sunrise or sunset?
The patient is asked to drink 
for examining the stomach by X-rays because X-rays are
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(a) Reflected by heavy atoms |
(b) Refracted by heavy atoms |
|
(c) Less absorbed by heavy atoms |
(d) More absorbed by heavy atoms |
For the post office box arrangement to determine the value of unknown resistance the unknown resistance should be connected between
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(a) B and C |
(b) C and D |
(c) A and D |
(d) B1 and C1 |
In the uranium radioactive series, the initial nucleus is 
and the final nucleus is 
. When the uranium nucleus decays to lead, the number of α - particles emitted will be
|
(a) 1 |
(b) 2 |
(c) 4 |
(d) 8 |