Question # 1

The algebraic sum of potential change in a closed circuit is zero.

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Kirchhoff's 1st rule

Kirchhoff 2^nd rule

Krichoff's 3^rd rule

Kirchhoff 4^th rule

The energy of 4th Orbit in hydrogen atom is.

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-2.51 eV

-3.50 eV

-13.60 eV

-0.85 eV

The AC system is preferred to DC system because:

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AC voltage can be easily changed in magnitude

DC motor angular velocity is affected badly

High voltage AC transmission is less efficient

Domestic appliance require AC voltage for their operation

The peak value of alternating current is 5√2 A. The mean square value of current will be:

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5A

2.5A

5√2A

5²

The background radiation to which we are exposed, on the average is.

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1 mSv per year

2 mSv per year

3 mSv per year

4 mSv per year

An ECG records the _____ between points on human skin generated by electric process i the heart.

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Heart beat

Pulse rate

Pressure

Voltage

Wave nature of light appears in

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Pair production

Compton effect

Photo electric

Interference

The combined effect of resistance and reactance is knows as.

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Inductance

Conductance

Resistance

Impedance

Which one of the following bulbs has the least resistance.

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100 W

200 W

500 W

1000 W

Binding energy per nucleon is maximum for

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Platinum

Iron

Uranium

Lead

If force in the direction of velocity of conductor, then induced current is directed,

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Anti clockwise

Clock wise

At equilibrium

None of above

The mutual inductance between two coils depends upon their

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Size

Core material

Size, core material and separation

Separation

If the coil is wound on iron core, the flux through it.

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Decreases

Becomes zero

Increases

Remains constant

Commentator was invented by

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Henry

Ousted

Maxwell

William sturgeon

Photodiode is used for wave nature of.

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Light

Thermal radiation

Radi waves

Sound waves

When the back emf in a current is zero, it draws

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Zero current

Maximum current

Minimum current

Steady average current

Improper bisting of a transistor circiut produces:

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Heavy loading of emitter current

Distortion in the output output signal

Excessive heat at collector terminal

Faculty location of load line

substance which undergo plastic deformation until they break are known as.

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Brittle substances

Ductile substance

Non magnetic substance

Magnetic substance

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