What precaution should a manufacturer take to ensure that energy loss in a transformer is minimized?
the winding of the transformer should be made of high resistance wire
the core should be made of thin sheets of metal
the core should be made of thin sheets of metal
the flux linking the primary with the secondary coils should be minimum
Correct answer is B
No explanation has been provided for this answer.
The number of neutrons contained in the nucleus \(^{238}_{92}U\) is
92
146
238
330
Correct answer is B
238 - 92 = 146
0.03\(\Omega\) series resistor
0.03\(\Omega\) shunt resistor
9.99\(\Omega\) shunt resistor
9.99\(\Omega\) series resistor
Correct answer is B
No explanation has been provided for this answer.
A lamp is rated 240V, 60W. The resistance of the filament is
960\(\Omega\)
16\(\Omega\)
15\(\Omega\)
4\(\Omega\)
Correct answer is A
P = \(\frac{V_2}{R}\) \(\Rightarrow\) R = \(\frac{V_2}{p}\)
= \(\frac{240\times 240}{60}\)
= 960\(\Omega\)
heat dissipation
production of eddy currents
excessive current discharge
excessive voltage distance
Correct answer is A
No explanation has been provided for this answer.