Question # 1

Which of the modulus of elasticity is involved in compressing a rod to decrease its length ?

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Young's modulus

Bulk modulus

Modulus of elasticity

None of these

NC-1 is the SI unit is

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Force

Charge

Current

Electric intensity

Magnetic effect of current is used

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To detect a current

To measure a current

In electric motor

All of above

Which of the following are not hadrons.

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Muons

Mesons

Positrons

Neutrons

In case of op-amp as an inverting amplifier, V₊ - V_- = 0, this is because

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Open gain loop is very low

Closed loop gain is very high

Open loop gain is very high

Both (a) and (a)

The current through a resistance of 100 Ohm when connecting across a source of 220 V is.

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22000 A

22 A

2.2 A

0.45 A

When 10 V are applied to an A.C circuit, the current flowing in it is 100 mA. It impedance is.

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100 Ohm

10 Ohm

1000 Ohm

1 Ohm

Which device is used as a rectifier?

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Capacitor

Transistor

Diode

Transformer

The gate, which changes the logic level to its opposite level is called

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NOR gate

AND gate

OR gate

NOT gate

In Series resonance circuit the impedance of circuit art resonance frequency, is

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Maximum

Minimum

It is unequal to R

None of above

The SI unit of flux density is.

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NA-1 m2

NA-1 m-1

NAm-1

NA-1 m

Heat generated by a 40 W bulb in one hour is.

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140 J

1440 J

14400 J

144000 J

Max planck received noble prize in:

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1927

1932

1918

1914

The net charge on a capacitor magnitude of charge of charge

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Infinity

2 q

Q/2

Zero

The bnding energy for nucleus A is 7.7 Me V and that for nucleus B is 7.8 MeV. Which nucleus has the larger mass?

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Nucleas A

Nucleus B

Less than nucleus

None of these

The illustration of the phenomenon of mutual induction is in the device of

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Transformer

Inductor

A.C. Generator

Ammeter

If an electron is prijected in a magnetic field with velocity V, it will experience a force

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In an nihilation emitted photons moves in opposite directions to conserve.

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Mass

Charge

Energy

Momentum

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