Recent questions in Engineering Entrance Exams

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1 answer 327 views

A particle is moving along a circular path with a constant speed 30 m/s.

asked Jun 2, 2021 in Physics by anonymous

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1 answer 252 views

A coil of inductance 300 mH and resistance 2 is connected to a source of voltage 2 V.

asked Jun 2, 2021 in Physics by Doubtly (98.9k points)

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1 answer 672 views

When current in a coil changes from 5 A to 2 A in 0.1 s, an average voltage of 50 V is produced

asked Jun 2, 2021 in Physics by Doubtly (98.9k points)

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1 answer 461 views

A rectangular loop is present in the magnetic field region of an infinite long wire. Now the loop is being rotated as shown in the figure.

asked Jun 2, 2021 in Physics by Doubtly (98.9k points)

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1 answer 193 views

A conducting square loop is placed in a magnetic field B with its plane perpendicular to the field. The sides of the loop start shrinking at a constant rate

asked Jun 2, 2021 in Physics by Doubtly (98.9k points)

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1 answer 206 views

A conducting circular loop made of a thin wire, has area 3.5 x 10–3 m2 and resistance 10Ω .

asked Jun 2, 2021 in Physics by Doubtly (98.9k points)

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1 answer 319 views

Identify the pair whose dimensions are equal

asked May 30, 2021 in Physics by Doubtly (98.9k points)

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1 answer 757 views

Which of the following physical quantities is an axial vector?

asked May 29, 2021 in Physics by Doubtly (98.9k points)

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1 answer 234 views

A rocket is fired vertically with a speed of 5 kms-1 from the earth’s surface. How far from the earth does the rocket go before returning to the earth

asked May 29, 2021 in Physics by Doubtly (98.9k points)

+1 vote

1 answer 725 views

The position vector of a moving particle at time t is r=3i+4t^2j-t^3k .. Its displacement during the time interval t=1 s to t=3 s is

asked May 28, 2021 in Physics by Doubtly (98.9k points)

+1 vote

1 answer 3.3k views

If a unit vector is represented by 0.5i +0.8 j +ck then the value of 'c' is

asked May 28, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 252 views

The area of the region bounded by the curve y = 2x – x2 and x – axis is

asked May 28, 2021 in mathematics by Doubtly (98.9k points)

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1 answer 217 views

The point on the curve 6y = x3 + 2 at which y – co-ordinate is changing 8 times as fast as x– co-ordinate is ______________

asked May 28, 2021 in mathematics by Doubtly (98.9k points)

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1 answer 268 views

The joint equation of bisectors of angles between lines x = 5 and y = 3 is ___________

asked May 28, 2021 in mathematics by Doubtly (98.9k points)

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1 answer 180 views

Derivative of log (secθ + tanθ ) with respect to secθ at θ = π/4 is ____________

asked May 28, 2021 in mathematics by Doubtly (98.9k points)

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1 answer 180 views

In Δ ABC (a – b)2 cos2 2 c + (a + b)2 sin2 2 c =

asked May 27, 2021 in mathematics by Doubtly (98.9k points)

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1 answer 184 views

If r.v. X : waiting time in minutes for bus and p.d.f. of X is given by

asked May 27, 2021 in mathematics by Doubtly (98.9k points)

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1 answer 230 views

Three identical masses m are kept at the vertices of equilateral Δ of side ‘a’.

asked May 26, 2021 in Physics by Doubtly (98.9k points)

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1 answer 222 views

There is a stream of neutrons with the kinetic energy of 0.0327 eV.

asked May 22, 2021 in Physics by Doubtly (98.9k points)

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1 answer 184 views

There is a stream of neutrons with a kinetic energy of 0.0327 eV.

asked May 22, 2021 in Physics by Doubtly (98.9k points)

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