The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

Electric Circuits
The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

3 / 4 Ω.

6 Ω.

3 / 2 Ω.

4 / 3 Ω.

3 / 4 Ω.

6 Ω.

3 / 2 Ω.

4 / 3 Ω.

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Electric Circuits
Current locus is obtained by which of the following?

Varying any one of the circuit element

None of these

Either of these

Varying source frequency

Varying any one of the circuit element

None of these

Either of these

Varying source frequency

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Electric Circuits
In the circuit shown in figure if I1 = 1.5 A, then I2 will be

0.5 A.

2 A.

1.5 A.

1 A.

0.5 A.

2 A.

1.5 A.

1 A.

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Electric Circuits
If the length of a wire of resistance R is uniformly stretched to n times its original value, what will be its new resistance

R / n2.

nR .

n2 / R.

n2R.

R / n2.

nR .

n2 / R.

n2R.

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Electric Circuits
Disadvantages of constant k type filter

none of these.

attenuation does not increase rapidly beyond cut off frequency.

characteristic impedance unchanged in pass band.

both A and B.

none of these.

attenuation does not increase rapidly beyond cut off frequency.

characteristic impedance unchanged in pass band.

both A and B.

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Electric Circuits
The equation for 25 cycles current sine wave having rms value of 30 amps, will be

30sin25πt.

30sin50πt.

42.4sin25πt.

42.4sin50πt.

30sin25πt.

30sin50πt.

42.4sin25πt.

42.4sin50πt.

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Electric Circuits

Electric Circuits The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

Electric Circuits Current locus is obtained by which of the following?

Electric Circuits In the circuit shown in figure if I1 = 1.5 A, then I2 will be

Electric Circuits If the length of a wire of resistance R is uniformly stretched to n times its original value, what will be its new resistance

Electric Circuits Disadvantages of constant k type filter

Electric Circuits The equation for 25 cycles current sine wave having rms value of 30 amps, will be

Electric Circuits
The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

Electric Circuits
Current locus is obtained by which of the following?

Electric Circuits
In the circuit shown in figure if I1 = 1.5 A, then I2 will be

Electric Circuits
If the length of a wire of resistance R is uniformly stretched to n times its original value, what will be its new resistance

Electric Circuits
Disadvantages of constant k type filter

Electric Circuits
The equation for 25 cycles current sine wave having rms value of 30 amps, will be