18TH CENTURY REVOLTS AND REFORM QUIZ

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What is the full form of UN in 'UN Human Rights Prize'?

Uniform Nacional

United Nations

Unity Nation

Uniformed Nations

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Which one of the following statement is TRUE?

In the cables, the location of fault is usually found out by comparing the capacitances of insulated conductors.

In the cables, sheaths are used to provide enough strength.

The current carrying capacity of cables in DC is less than that in AC.

Underground cables are laid at sufficient depth to avoid being unearthed easily due to removal of soil.

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If the velocity of electromagnetic wave in free space is 3 × 10⁸ m/s, then the velocity in a medium with εr of 4.5 and μr of 2 would be

3 × 10⁸ m/s

1 × 10⁸ m/s

9 × 10⁸ m/s

27 × 10⁸ m/s

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Magnetic tape is not practical for applications where data must be quickly recalled because tape is a/an____.

None of these

expensive storage medium

Sequential access medium

Random access medium

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Nangal Wildlife Sanctuary is located in which state?

Sikkim

Punjab

Mizoram

Tamil Nadu

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In a typical DC micro grid, hybrid storage system is a combination of

Lead acid battery and Capacitor

Lead acid battery and ultra capacitor / super capacitor

Lead acid battery and Lithium ion battery

None of these

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A generating station having 'n' section busbars each rated at Q kVA with ×% reactance is connected on the tie-bars systems through busbar reactances of b%. Determine the short circuit kVA if a 3-phase fault takes place on one section.

Q[(1/x) + (n+1)/(bn-x)]

Q[(1/x) + (n+1)/(bn+x)]

Q[(1/x) + (n-1)/(bn+x)]

Q[(1/x) - (n+1)/(bn-x)]

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The line currents in amperes in phases a, b and c respectively are 500 +j150, 100 – j600 and – 300 + j600 referred to the same reference vector with phase sequence of abc. Find the symmetrical component of currents.

Ia₀ = (100+j50) AIa₁ = (546.41+j165.47) AIa₂ = (-146.41-j65.47) A

Ia₀ = (100+j50) AIa₁ = (546.41+ j165.47) AIa₂ = (546.41-j165.47) A

Ia₀ = (100+j50) AIa₁ = (146.41+ j65.47) AIa₂ = (546.41-j165.47) A

Ia₀ = (100+j50) AIa₁ = (200+ j107.75) AIa₂ = (200-j107.75) A

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In the RLC series circuit shown in figure, resonance occurs when the value of C is 20 µF. The supply voltages is v(t) = 20 sin (500t) V. Find the value of L.

5 H

5 mH

0.2 mH

0.2 H

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