1
GATE EE 2013
+2
-0.6
A strain gauge forms one arm of the bridge shown in the figure below and has a nominal resistance without any load as $$\,{R_s} = 300\Omega .$$ Other bridge resistance are $$\,{R_1} = {R_2} = {R_3} = 300\Omega .\,\,$$ The maximum permissible current through the strain gauge is $$20$$ $$mA.$$ During certain measurement when the bridge is excited by maximum permissible voltage and the strain gauge resistance is increased by $$1$$% over the nominal value, the output voltage $${V_0}$$ in $$mV$$ is
A
$$56.02$$
B
$$40.83$$
C
$$29.85$$
D
$$10.02$$
2
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
$$L = {{{R_4}} \over {{R_2}{R_3}}}\,\,\,\,R = {1 \over {{C_4}{R_2}{R_3}}}$$
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 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 $${R_2}$$
EXAM MAP
Medical
NEET