Question # 1

An ammeter is an electrical instrument which is used to measure.

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Voltage

Current

Resistance

None

Recentaly a complex crystalline structure known as yttrium barium copper oxide (Yba₂Cu₃O₃) have reported to become super conductor at

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163 K

169 K

200 K

100 K

The electric field created by positive charge is

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Radially inward

Zero

Circular

Radially outward

In LR circiut which one of the following statements is correct?

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L and R opposes each other

R value increases with frequency

The inductive reactance increases with frequency

The inductive reactance decreases with frequency

The value of Wien's constant:

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2.9x10^-3mk

2.19x10^-7mk

3.18 x10⁶ km^-1

6.21 x 10^-9m²wk³

When platinum is it becomes orange at.

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500^oC

900^oC

1100^oC

1300^oC

The thermistors convert changes of temperature into.

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Light energy

Electric voltage

Heat

Sound

Bottom quark carries charge :

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2/3 e

-2/3 e

+1/3 e

-1 /3 e

Due to polarization, electric field E.

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Increase

Decrease

First increases then decreases

Remain same

Energy released by conversion of 1 amu is

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200 MeV

931 MeV

233 MeV

243 MeV

A Current flowing towards the reader is denoted by.

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Cross

a bracket

A dot

Positive sign

The power factor of RL series circuit is.

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0

1

Less then 1

More than one

Internal frame is a frame is which

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1st law holds

2nd law holds

3rd law holds

Kelvin's law holds

A wire stretched to double of its length, its strain is:

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2

1

0

0.5

If there is no fourth band, tolerance is shows as

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10%

If speed of rotation of a generator is doubled the output voltage will be.

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Remain same

Double

Four time

One half

The electrical intensity is equal to:

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-Δr/Δv

Δv/Δr

Δv/Δv

-Δv/Δr

Transistor was invented by:

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Bardeen

Micheal faraday

Lenz

Newton

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