Question # 1

OP-AMP has the following input terminals

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one

two

three

four

Angular momentum is a:

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vector quantity

Imaginary quantity

Complex Quantity

Scalar Quantity

One electron volt is equal to

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1.6 x 1019eV

6.25 x 1018 eV

1.6 x 1018 eV

6.25 x 1019eV

Synthetic materials fall into the category of

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crystalline solids

amorphous

polymeric solids

all of them

Conventionally the angular velocity is directed at an angle of

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90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

Which of the following four statements is false?

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A body can have zero velocity and still be accelerated

A body can have a constant velocity and still have a varying speed

A body can have a constant speed and still have a varying velocity

The direction of the velocity of a body can change when its acceleration is constant

(CRO) Cathode ray oscilloscope is a device used for high speed

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velocity

graph plotting

time-velocity

none of these

Radian is defined as the angle subtended at the center of a circle by an arc of:

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Length equal to its diameter

Length equal to its radius

Any length

None of these

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

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49 rad/sec²

1 rad/sec²

0.16 rev/sec²

Both A and C

Both B and C

Which of the following changes at an antinode in a stationary wave?

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Density only

Pressure only

Both pressure and density

Neither pressure nor density

Glycerin has viscosity _____ the viscosity of water:

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More than

Equal to

Less than

None of these

Which of the material is brittle ?

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Steel

Low carbon steel

High carbon steel

None of these

The angular momentum is a vector quantity with due

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Perpendicular to the axis of rotation

Along the axis of rotation

At the axis of rotation

None of these

The ratio of the inertial mass to gravitational mass is equal to

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1/2

1

2

No fixed number

A cane filled with water is revolved in a vertical circle of radius 4 m and water just not fall down The time period of revolution will be nearly

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1 s

4 s

8 s

10 s

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3 N.The force between A and B when the charges on them are doubled and distance is halved

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1.92 N

19.2 N

12 N

0.192 N

In Michelsion's interferometer, if 'm' number of fringes are passed in front of a reference point when the moveable mirror is moved a distance L, then

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L = mλ

L = 2mλ

L = mλ/2

L = 3/2 mλ

The magnetic field of a solenoid is quite similar to that of a:

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Straight conductor

A horse shoe magne

Any magnet

A bar magnet

The absence of light in the optical fibres represents the number

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0

1

2

-1

Semiconductors, like Ge or Si at room temperature becomes a

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Semiconductor

Conductor

Insulator

None of these

The numerical ratio of velocity to speed is

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Less than 1

Less than zero

Greater than 1

Either less than or equal to one

In equation of continuity, if the fluid is incompressible and the flow is steady, the mass of the fluid is

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Some what conserved

Conserved

Not conserved

None of these

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