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SRMJEE Mock Test (Engg) - 7 - JEE MCQ


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30 Questions MCQ Test SRMJEEE Subject Wise & Full Length Mock Tests 2024 - SRMJEE Mock Test (Engg) - 7

SRMJEE Mock Test (Engg) - 7 for JEE 2024 is part of SRMJEEE Subject Wise & Full Length Mock Tests 2024 preparation. The SRMJEE Mock Test (Engg) - 7 questions and answers have been prepared according to the JEE exam syllabus.The SRMJEE Mock Test (Engg) - 7 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for SRMJEE Mock Test (Engg) - 7 below.
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SRMJEE Mock Test (Engg) - 7 - Question 1

The power factor of an A.C. circuit having resistance (R) and inductance (L) connected in series and an angular velocity is ω is

Detailed Solution for SRMJEE Mock Test (Engg) - 7 - Question 1
 Power factor = R/√(R^2 + L^2ω^2).
SRMJEE Mock Test (Engg) - 7 - Question 2

Which of the following radiation series is found in the visible region?

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SRMJEE Mock Test (Engg) - 7 - Question 3

Two racing cars of masses m₁ and m₂ are moving in circles of radii r₁ and r₂ respectively. Their speeds are such that each makes a complete circle in the same duration of time t. The ratio of the angular speed of the first to the second car is

SRMJEE Mock Test (Engg) - 7 - Question 4

A mass of 12Kg at rest explodes into two pieces of masses 4Kg and 8Kg which move in opposite directions. If the velocity of 8Kg piece is 6 ms-1, then the kinetic energy of the other piece in joules is
(Hint : Apply law of conservation of momentum)

SRMJEE Mock Test (Engg) - 7 - Question 5

A copper wire of resistance R is cut into ten parts of equal length. Two pieces each are joined in series and then five such combinations are joined in parallel. The new combination will have a resistance

SRMJEE Mock Test (Engg) - 7 - Question 6

The effective value of a.c. in a circuit is 10 A. The peak value of current is

SRMJEE Mock Test (Engg) - 7 - Question 7

4 eV is the energy of the incident photon and the work function in 2 eV. What is the stopping potential

SRMJEE Mock Test (Engg) - 7 - Question 8

To keep constant time, watches are fitted with balance wheel made of

SRMJEE Mock Test (Engg) - 7 - Question 9

The binary number 110000111101 corresponds to a hexadecimal number:

SRMJEE Mock Test (Engg) - 7 - Question 10

A body of mass 100 g is sliding from an inclined plane of inclination 30º. What is the frictional force experienced if μ=1.7

SRMJEE Mock Test (Engg) - 7 - Question 11

The force of gravitation is

SRMJEE Mock Test (Engg) - 7 - Question 12

A charged particle of mass 5 x 10−6 Kg is held stationary in space by placing it in an electric field of strength 106 NC−1 directed vertically downwards. The charge on the particle is (g = 10ms−2)

SRMJEE Mock Test (Engg) - 7 - Question 13

A black body of surface area 10 cm2 is heated to 127ºC and is suspended in a room at temperature 27ºC. The initial rate of loss of heat from the body to the room will be

SRMJEE Mock Test (Engg) - 7 - Question 14

Mean kinetic energy (or average energy) per gm molecule of a monoatomic gas is given by

SRMJEE Mock Test (Engg) - 7 - Question 15

A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. If a force P is applied at the free end of the rope, then force exerted by the rope on the block is

SRMJEE Mock Test (Engg) - 7 - Question 16

When a charged particle moves perpendicular to a magnetic field, then

SRMJEE Mock Test (Engg) - 7 - Question 17

Susceptibility is positive and large for a

SRMJEE Mock Test (Engg) - 7 - Question 18

Water is flowing over a fixed horizontal surface. If the velocity gradient at a distance 10 cm above the surface is 2 s⁻1, then velocity of layer will be

SRMJEE Mock Test (Engg) - 7 - Question 19

A ball is dropped on to the floor a height of 10 m. It rebounds to a height of 2.5 m. If the ball is in contact with the floor for 0.01 seconds, what is the average acceleration during contact?

SRMJEE Mock Test (Engg) - 7 - Question 20

Consider the following statements
Assertion (A) : On a rainy day, it is difficult to drive a car or bus at high speed
Reason (R) : The value of coefficient of friction is lowered due to wetting of the surface
Of these statements

SRMJEE Mock Test (Engg) - 7 - Question 21

A man fires a bullet of mass 200 g at a speed of 5 m/s. The gun is of one kg mass. by what velocity the gun rebounds backwards

SRMJEE Mock Test (Engg) - 7 - Question 22

To make the frequency double of a spring oscillator, we have to

SRMJEE Mock Test (Engg) - 7 - Question 23

An aeroplane is flying at a constant horizontal velocity of 600 km/hr at an elevation of 6 km towards a point directly above the target on the earth's surface. At an appropriate time, the pilot releases a ball so that it strikes the target at the earth. The ball will appear to be falling

SRMJEE Mock Test (Engg) - 7 - Question 24

In a streamline flows if the gravitational head is h. The kinetic and pressure heads are

SRMJEE Mock Test (Engg) - 7 - Question 25

A dancer on ice spins faster when she folds her arms. This is due to

SRMJEE Mock Test (Engg) - 7 - Question 26

A beam of light incident on a plane mirror forms a real image on reflection. The incident beam is

SRMJEE Mock Test (Engg) - 7 - Question 27

The surface tension of a liquid is 70 dynes/cm. It may be expressed in MKS system as

SRMJEE Mock Test (Engg) - 7 - Question 28

If pressure at half the depth of a lake is equal to 2/3 pressure at the bottom of the lake then what is the depth of the lake

Detailed Solution for SRMJEE Mock Test (Engg) - 7 - Question 28

Pressure at bottom of the lake
= P0 + hρg
and pressure at half the depth of a lake

SRMJEE Mock Test (Engg) - 7 - Question 29

A constant voltage is applied on a uniform wire, then the heat is produced. The heat so produced will be doubled, if

SRMJEE Mock Test (Engg) - 7 - Question 30

The pressure of a gas in a closed vessel is increased by 0.4%, if the temperature of the gas is increased by 1º C , the initial temperature of the gas is

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