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PREVIOUS
1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The core of any transformer is laminated so as to
A
reduce the energy loss due to eddy currents
B
make it light weight
C
make it robust and strong
D
increase the secondary voltage
2
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
The power factor of $$AC$$ circuit having resistance $$(R)$$ and inductance $$(L)$$ connected in series and an angular velocity $$\omega $$ is
A
$$R/\omega L$$
B
$$R/{\left( {{R^2} + {\omega ^2}{L^2}} \right)^{1/2}}$$
C
$$\omega L/R$$
D
$$R/{\left( {{R^2} - {\omega ^2}{L^2}} \right)^{1/2}}$$
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
In a transformer, number of turns in the primary coil are $$140$$ and that in the secondary coil are $$280.$$ If current in primary coil is $$4A,$$ then that in the secondary coil is
A
$$4A$$
B
$$2A$$
C
$$6A$$
D
$$10A$$
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