Rajasthan PET Previous Years Papers

Hello, I am applying for the various engineering entrance exams and I want the paper of the RPET, please provide me.

[Shaleen]

Hello, here I am providing you the paper of the RPET of previous year as under:

Capacitance of a capacitor made by a thin metal foil is 2 µµ F. If the foil is
filded with paper of thickness 0.15 mm. and dielectric constant of paper is
2.5, width of paper is 40 mm. then length of foil will be :
(1) 33.9 mm. (2) 13.4 mm. (3) 1.33 mm (4) 0.34 mm.

Resistance of a 10 m. long wire of potentio meter is 1 ΩΩ/m. A cell of 2.2 volt emf.
and HRB is connected in series with the wire. How much resistance must be applied
to get 2.2 mv gradient :
mt
(1) 1000 Ω (2) 990 Ω (3) 810 Ω (4) 790 Ω

Venturimeter is used to measure :
(1) surface teusion of liquid
(2) rate of flow of liquid
(3) density of liquid
(4) pressure of liquid

If an air bubble of radius 1 mm. moves up with uniform velocity of 0.109
cm/s. in a liquid column of density 14.7 x 103
kg./m3
. If g = 10 m/sec.2
then
coefficient of viscosity will be :
(1) 10.0 m=sec.2
(2) 9.78 m-sec.-2
(3) 9.62 m-sec.-2
(4) 9.86 m-sec.-2

A rocket launched with 10 km/sec. velocity radius of earth is R, then the
maximum height attained by it will be :
(1) 5 R
(2) 4 R
(3) 3 R
(4) 2 R

In p-n function avalanche current flows in circuit when be maximum when :
(1) excess
(2) zero
(3) reverse
(4) forward

Half life of a radioactive element is 10 days. The time during which quantity
remains 1/10 of initial mass will be :
(1) 16 days
(2) 33 days
(3) 50 days
(4) 100 days

Resistance of semiconductor at OK is :
(1) small
(2) large
(3) infinity
(4) zero

αα- particle of 400 KeV energy are bombarded on nucleus of 82 pb. In
scattering of αα-particles, its minimum distance from nucleus will be :
(1) 0.59 pm
(2) 5.9 pm
(3) 0.59 nm
(4) 0.59 Å

If the uncertainty in the position of an electron is 2Å then the uncertainty in
the energy is (about) :
(1) 94 eV
(2) 9.0 eV
(3) 1.0 eV
(4) 0.1 eV

Wrong statement is :
(1) Nuclear force is produced by the exchange of poins
(2) Nuclear force increases with increase in no. of nucleous
(3) Range of nuclear forces is very small
(4) Nuclear forces are strongest

The inductance required to connect bulb in series of 1 :
(1) 1.62 mH
(2) 16.2 mH
(3) 2.42 mH
(4) 1.27 mH

A charge moves in a circle perpendicular to a magnetic field. The time period
of revolution is independent of :
(1) velocity
(2) mass
(3) charge
(4) magnetic field

A coil of 40 ΩΩ resistance has 100 turns and radius 6 mm. is connected to
ammeter of 160 ohm resistance. Coil is placed perpendicular to the magnetic
field. When coil is taken out of the field 32 µµc charge flows through it. The
intensity of magnetic field will be :
(1) 0.566 T
(2) 0.655 T
(3) 5.66 T
(4) 6.55 T

A choke coil of 0.1 H inductance and 12 ΩΩ resistance. If it is connected to 60
Hz alternating current source the power factor will be:
(1) 0.24
(2) 0.28
(3) 0.30
(4) 0.32

For a gas Cv = 4.96 cal/mole-K, when 2 mole gas is heated from 340K to 342
K, increase in internal energy is :
(1) 9.92 cal.
(2) 13.90 cal.
(3) 19.84 cal.
(4) 27.80 cal.

Luminous intensity for a bulb of 40 watt at 110 V is 11.01 lumen/watt. The
distance at which intensity of illumination is 5 lumen/mt2
will be:
(1) 44.04 m
(2) 18.78 m
(3) 9.39 m
(4) 4.40 m

A 2m long rod of radius 1 cm. which is fixed from one end is given a twist of
0.8 radians. The shear strain developed will be :
(1) 0.016
(2) .008
(3) .004
(4) .002