1
GATE EE 2010
+2
-0.6
The Maxwell's bridge shown in the fig. is at balance, the parameters of the inductive coil are
A
$$R = {{{R_2}{R_3}} \over {{R_4}}}\,\,\,\,L = {C_4}{R_2}{R_3}$$
B
$$L = {{{R_2}{R_3}} \over {{R_4}}}\,\,\,\,R = {C_4}{R_2}{R_3}$$
C
$$R = {{{R_4}} \over {{R_2}{R_3}}}\,\,\,\,L = {1 \over {{C_4}{R_2}{R_3}}}$$
D
$$L = {{{R_4}} \over {{R_2}{R_3}}}\,\,\,\,R = {1 \over {{C_4}{R_2}{R_3}}}$$
2
GATE EE 2008
+2
-0.6
A bridge circuit is shown in the figure below. Which one of the sequence given below is most suitable for balancing the bridge?
A
First adjust $${R_4},$$ and then adjust $${R_1}$$
B
First adjust $${R_2},$$ and then adjust $${R_3}$$
C
First adjust $${R_2},$$ and then adjust $${R_4}$$
D
First adjust $${R_4},$$ and then adjust $${R_2}$$
3
GATE EE 2008
+2
-0.6
The ac bridge shown in the figure is used to measure the impedance $$Z.$$ If the bridge is balanced for oscillator frequency $$f=2$$ $$kHz$$, then the impedance $$Z$$ will be
A
$$\left( {260 + j0} \right)\,\Omega$$
B
$$\left( {0 + j200} \right)\,\Omega$$
C
$$\left( {260 - j200} \right)\,\Omega$$
D
$$\left( {260 + j200} \right)\,\Omega$$
4
GATE EE 2006
+2
-0.6
$${R_1}$$ and $${R_2}$$ are the opposite arms of $${R_3}$$ and $${R_4}$$ of a wheat stone bridge. The source voltage is applied across $${R_1}$$ and $${R_3}$$ under balanced conditions, which one of the following is true?
A
$${R_1} = {{{R_3}{R_4}} \over {{R_2}}}$$
B
$${R_1} = {{{R_2}{R_3}} \over {{R_4}}}$$
C
$${R_1} = {{{R_2}{R_4}} \over {{R_3}}}$$
D
$${R_1} = {R_2} + {R_3} + {R_4}$$
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