Question # 1

A full-scale deflection is obtained in a galvanometer with a current of few

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ampere

volts

milliampere

ohm

If work is done at the rate of 2 k j per second, then total work done is half an hour will be:

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0.5 Kwn

2 Kwh

1 Kwh

None of these

Unit of impulse in

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Newton

Kg m

Kg m/s

Joule

Sadi carnot described an ideal heat engine in

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1820

1840

1860

1880

The existence of position was predicted by Dirace in

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1920

1925

1930

1928

An inertial frame is that frame in which

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a>0

a=0

a<0

none of these

One radian is:

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Greater than one degree

Less than one degree

Equal to degree

none of these

For normal operation of transistor, the batteries

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V_CCis of much lower value than V_BB

V_CCis of much higher value than V_BB

V_{CC is equal to}V_BB

none of these

The magnetic field in the middle of a solenoid due to current is

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weak

strong and uniform

none-uniform

zero

The irregular and unsteady flow of the fluid is called

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turbulent flow

steady flow

either of them

both of them

The bridge circuit of full wave rectification uses

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one diode

two diode

three diode

four diode

The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to

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zero

maximum

minimum

infinity

The open loop gain of OP-AMP is of the order of

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10²

10³

10⁴

10⁵

When certain nucleus emits anα particle, its mass number:

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Increases by one

Decreases by one

Remain same

Decreases by four

None of these

During the steady flow, different streamlines

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cannot across each other

can across each other

either of them

neither of them

At ordinary temperature, an increase in temperature increases the conductivity of

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Conductor

Semiconductor

Insulator

Alloy

The pointer of a magnetic compass:

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Is affected only by permanent magnets

Align itself parallel to the applied magnetic field

Vibrates in the magnetic field of the current

Aligns itself perpendicular to the magnetic field

Both (C) and (D)

If 250V is the RMS value of alternative voltage, then its peak value V_owill be:

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353.5V

250V

175V

zero

400V

The first series which was identified in the spectrum of hydrogen is called:

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Lyman series

Balmer series

Paschen series

Brackett series

Pfund series

The branch of physics, which deals with the structure an properties of solids is called:

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Plasma physics

Solid state physics

Any of above

Astro physics

If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be

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Increasing by a factor of 2

Decreasing by a factor of 2

Decreasing by a factor of 4

Unchanged

At high speed, fluid friction _____ and fuel consumption ___,:

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Increases, decreases

Increases, increases

Decreases, increases

None of these

A body with frequency would complete one vibration in:

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f seconds

1/f seconds

1 second

f²second

The time required to complete on vibration is called

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frequency

total time

time period

velocity

A circuit has a resistance of 11Ωan inductive reactance of 25Ωand a capacitance reactance of 18Ω. It is connected to an a.c. source of 200 V and 50 Hz. The current through the circuit (in amperes) is

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11

15

18

20

A typical rocket consists of fuel

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more than 60% of launch mass

less than 60% of launch mass

less than 80% of launch mass

more than 80% of launch mass

Angular frequency 'w' is basically a characteristics of

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linear motion

circular motion

both of them

none of them

The natural arrangement of colours in the spectrum of white light spectrum is

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VIBGYOR

ROYBGIV

ROYBIGV

BIGROYV

None of these

The artillery shells travel along parabolic paths under the influence of

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magnetic field

electric field

electromagnetic field

gravitational field

The angular speed of a particle moving along a circular path is 5 Pie rad sec^-1, Its period of motion is:

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2.5 sec

0.06 sec

15.7 sec

0.4 sec

The value of LDR depends upon intensity of:

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Sound falling on it

Current passing through it

Magnetic field surrounding it

Light falling on it

Non of these

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