Question # 1

Magnetic flux density at a point due to current carrying coil is determined by

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Ampere's law

Faraday's law

Lenz's law

Gauss's law

In full wave rectification number of diodes required are equal to.

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2

3

4

5

The condition of resonance is:

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XL = 1/2 Xc

X_L = X_c

X_c = 4_x2

None of above

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

A solid in which there is not regular arrangement of molecules is called.

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Glassy solid

Amorphous solid

Crystalline solid

Both a and b

The resistivity of --------------------decrease with the increase in temp

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Gold

Silver

Copper

Silicon

The output voltage of a rectifier is.

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Smooth

Pulsating

Alternating

Per featly direct

Electron vibrating 94,000 times each second will produce radio waves of frequency.

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94 Hz

940 HZ

94 Hz

490 Hz

Two oppositely charged balls A and B attract the third ball C, when placed near them turn by turn The third ball C must be.

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Positively charged

Negatively charged

Electrically neutral

Positively and negatively charged

when an inductor comes close to a metallic object, its inductance is.

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Decreased

Increased

Becomes half

Becomes 4 times

A transistor has parts:

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2

3

4

5

Magnetism is related to:

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Stationary charges

Moving charges

Stationary & Movingcharges

Law of motion

The product of resistance and capacitanc eis.

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Velocity

Force

Acceleration

Time

The magnitude of back emf:

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Increases with sped of motor

Decreases with speed of motor

Remains same

None of above

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

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Brittle substances

Ductile substance

Non magnetic substance

Magnetic substance

Number of Isotopes of Neon gas are

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2

3

4

1

Einstein was awarded Nobel prize in physics in

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1905

1911

1918

1921

Compton's effect is associated with

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gamma rays

Beta rays

X rays

Positive rays

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