1
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
Alternating current can not be measured by $$D.C.$$ ammeter because
A
Average value of current for complete cycle is zero
B
$$A.C.$$ Changes direction
C
$$A.C.$$ can not pass through $$D.C.$$ Ammeter
D
$$D.C.$$ Ammeter will get damaged.
2
AIEEE 2004
MCQ (Single Correct Answer)
+4
-1
In a $$LCR$$ circuit capacitance is changed from $$C$$ to $$2$$ $$C$$. For the resonant frequency to remain unchaged, the inductance should be changed from $$L$$ to
A
$$L/2$$
B
$$2L$$
C
$$4L$$
D
$$L/4$$
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
In an oscillating $$LC$$ circuit the maximum charge on the capacitor is $$Q$$. The charge on the capacitor when the energy is stored equally between the electric and magnetic field is
A
$${Q \over 2}$$
B
$${Q \over {\sqrt 3 }}$$
C
$${Q \over {\sqrt 2 }}$$
D
$$Q$$
4
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
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