Question # 1

When platinum is it becomes orange at

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500^oC

900^oC

1100^oC

1300^oC

In case of capacitor, the unit of reactance is

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Farad

Ohm

Newton

All of these

Which one of the following is polymeric solids

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Glass

Nylon

Copper

Zinc

For which material medium, force between two charged particles is maximum.

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Ammonia

Germanium

Mica

Teflon

The electric intensity due to two oppositely charged plates is

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None of these

The sum of positive and negative peak value called.

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R.M.S. value

P-P value

Peak value

Average value

OR gate is represented by:

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X = A+B

X=A.B

X=A+B

X=A.B

The sensitivity of galvanometer directly depends upon

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Magnetic field

Area of coil

Both a and b

None of a, b, c

The natural frequency of L.C circuit is equal to

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X₁is low for low frequency Fy but Xc is.

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Zero

Low

High

Same is H

In RLC circuit the energy is dissipated in

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R only

R and L

R and C

L and C

Calculate current in 2 2R /4Ω resistor.

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1 A

2R /4Ω

R/3Ω

2R /3Ω

Which factor does not affect the conductivity of PN-Junction diode.

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Doping

Temperature

Voltage

Pressure

Unit of decay constantλ is:

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ms

m^-1

m

S^-1

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None of the above

The net charge on a capacitor magnitude of charge of charge

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Infinity

2 q

Q/2

Zero

In the Bohr's model of the hydrogen atom, the lowest orbit corresponds to:

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Infinite energy

Maximum energy

Minimum energy

Zero energy

The electric field created by positive charge is

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Radially inward

Zero

Circular

Radially outward

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