ESE ME 2018: Semi Syllabus National Achievers Test for ESE & GATE ME Exams

Question 1

The state of stress at a point in a body is given by $Description: F:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-22-April\GATE-IES-ME-Strength-of-Materials_files\image118.png$ =100 MPa and $Description: F:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-22-April\GATE-IES-ME-Strength-of-Materials_files\image198.png$ =200 MPa. One of the principal stresses σ₁=250 MPa .The magnitudes of the other principal stress and the shearing stress $Description: F:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-22-April\GATE-IES-ME-Strength-of-Materials_files\image108.png$ are respectively

Question 2

A steel rod, 2 m long, is held between two walls and heated from 20 °C to 60 °C. Young’s modulus and coefficient are 200×10³ MPa and the 10×10^-6 °C respectively. The stress induced in the rod, if walls yield by 0.2 mm, is

Question 3

In power transmission shafts, if the polar moment of inertia of a shaft is doubled, then what is the torque required to produce the same angle of twist?

Question 4

What is the total angle of twist of the stepped shaft at free end subject to torque T shown in figure given below?
$Description: F:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-22-April\GATE-IES-ME-Strength-of-Materials_files\image345.jpg$

Question 5

Rivets undergo single shear in

Question 6

A multi-disc clutch employs 3 steel and 2 bronze discs having outer diameter of 300mm and inner diameter of 175mm. If the coefficient of friction is 0.25 and axial force on each pair of surfaces is 5kN, then the torque transmitted (assuming uniform wear) is

Question 7

Endurance limit is of primary concern in the design of a/an
1) rotating shaft
2) industrial structure
3) column
4) machine base
Which of the above is/are correct?

Question 8

a worm gear set is designed to have pressure angle of 30 ° which is equal to the helix angle. The efficiency of the worm gear at an interface friction of 0.05 is

Question 9

Assertion (A): The power transmitted through a pipe is maximum when the loss of head due to friction is equal to one-third of total head at the inlet.
Reason (A): Velocity is maximum when the friction loss is one-third of the total head at the inlet.

Question 10

An isosceles triangular lamina of base 1 m and height 2 m is located in the water in vertical plane and its vertex is 1 m below the free surface of the water. The position of force acting on the lamina from the free water surface is:

Question 11

The centre of pressure for an inclined surface area

Question 12

Two geometrically similar pumps are running at 1000 rpm speed (both). lf one pump has impeller diameter of 0.3 m and discharges 20 lps against 20 m head, and the other pump gives half of this discharges rate; calculate head and diameter of second pump

Question 13

Surface cracking occurring at low temperatures in hydrostatic extrusion is known as

Question 14

Flank wear occurs mainly on which of the following:

Question 15

Hot cracks occur in the weld and fusion zone as the metal solidifies. Which of the following are the causes for hot cracks?
1. Presence of sulphur and phosphorus in the base metal
2. High carbon or alloy content of the base metal
3. Moisture in the joint or electrode
4. Joint restraint
Select the correct answer using the code given below:

Question 16

Consider the following statements:
A nomenclature 50 H8/p8 denotes that
1. Hole diameter is 50 mm.
2. It is a shaft base system.
3. 8 indicates fundamental deviation.
Which of the statements is/are correct?

Question 17

Match List-I with List-II and select the correct answer using the code given below the lists:
List-I
A) Heat transfer through solid
B) heat transfer from hot surface to surrounding fluid
C) Heat transfer in boling liquid
D) heat transfer from one body to another separated in space.
List-II
1) Radiation heat transfer
2) Fourier’s law of heat conduction
3) Convention heat transfer
4) Newton’s law of cooling

Question 18

A thin flat plate 2 m x 2 m is hanging freely in air. The temperature of the the surroundings is

25°C. Solar radiation is falling on one side of the plate at the rate of 500 W. What should be the convection heat transfer coefficient in W/m²°C,(consider heat transfer only from the one surface) if the temperature of the plate is to remain constant at 30°C?

Question 19

A counter flow shell and tube exchanger having an area of 32.5 m², is used to heat water with hot exhaust gases. The water (C_p = 4.16 kJ/kg K) flows at a rate of 2 kg/sec while thee exhaust gases (C_p = 1.03 kJ/ kg K) flow at a rate of 5.15 kg/sec. If the overall heat transfer surface coefficient is 200 W/m²K, the NTU for the heat exchanger is

Question 20

Match List-I with List-II and select the correct answer using the code given below the lists:
List-I
A) Radiation heat transfer
B) Conduction heat transfer
C) Forced convection
D) Transient heat flow
List-II
1) Fourier number
2) Wien’s displacement law
3) Fourier law
4) Stanton number