Question 1

Among casting, forging and forging which has the slowest rate of production?

Accepted Answer

A)  casting
B)  forging
C)  machining
D)  all have equal rate of production C

Question 2

A beam is said to be of uniform strength, if

Accepted Answer

A)  b.m. is same throughout the beam
B)  shear stress is the same through the beam
C)  deflection is the same throughout the beam
D)  bending stress is the same at every section along its longitudinal axis D

Question 3

Which process allows controlling grain structure of the product?

Accepted Answer

A)  casting
B)  forging
C)  none of the mentioned
D)  die casting B

Question 4

Stress in a beam due to simple bending is

Accepted Answer

A)  directly proportional
B)  inversely proportional
C)  curvilinearly related
D)  none of the mentioned

Question 5

Stress intensity factor is the critical value of stress at which crack extension occurs.

Accepted Answer

A) True 
 B)False

Question 6

The bending stress is

Accepted Answer

A)  directly proportional to the distance of layer from the neutral layer
B)  inversely proportional to the distance of layer from the neutral layer
C)  directly proportional to the neutral layer
D)  does not depend on the distance of layer from the neutral layer

Question 7

The safe stress for a hollow steel column which carries an axial load of 2100 kN is 125 MN/m2. if the external diameter of the column is 30cm, what will be the internal diameter?

Accepted Answer

A)  25 cm
B)  26.19cm
C)  30.14 cm
D)  27.9 cm

Question 8

Which of the following is incorrect about tolerances?

Accepted Answer

A)  too loose tolerance results in less cost
B)  tolerance is a compromise between accuracy and ability
C)  too tight tolerance may result in excessive cost
D)  fit between mating components is decided by functional requirements

Question 9

In forging, metal is in which of the following stage?

Accepted Answer

A)  elastic
B)  plastic
C)  can be in any stage
D)  rigid

Question 10

Consider a 250mmx15mmx10mm steel bar which is free to expand is heated from 15C to 40C. what will be developed?

Accepted Answer

A)  compressive stress
B)  tensile stress
C)  shear stress
D)  no stress

Question 11

Quality control charts doesn't depend on which factor?

Accepted Answer

A)  normal distribution
B)  random sampling
C)  independence between samples
D)  binomial distribution

Question 12

The bending stress in a straight beam varies linearly with the distance from neural axis like that in a curved beam.

Accepted Answer

A) True 
 B)False

Question 13

Why tolerances are given to the parts?

Accepted Answer

A)  because it's impossible to make perfect settings
B)  to reduce weight of the component
C)  to reduce cost of the assembly
D)  to reduce amount of material used

Question 14

In manual assembly, cost of screw is higher than the cost of driving a screw.

Accepted Answer

A) True 
 B)False

Question 15

How many modes are there for crack propagation?

Accepted Answer

A)  2
B)  3
C)  4
D)  5

Question 16

What is bilateral tolerance?

Accepted Answer

A)  total tolerance is in 1 direction only
B)  total tolerance is in both the directions
C)  may or may not be in one direction
D)  tolerance provided all over the component body

Question 17

On bending of a beam, which is the layer which is neither elongated nor shortened?

Accepted Answer

A)  axis of load
B)  neutral axis
C)  center of gravity
D)  none of the mentioned

Question 18

What is mean clearance?

Accepted Answer

A)  maximum size of hole minus maximum size of shaft
B)  minimum size of hole minus minimum size of shaft
C)  mean size of hole minus mean size of shaft
D)  average of both size of shaft and hole

Question 19

Cast surfaces have good finishing.

Accepted Answer

A) True 
 B)False

Question 20

Maximum carbon content in welding is usually limited to

Accepted Answer

A)  0.22%
B)  0.8%
C)  1.5%
D)  2%

Exam 1: Mechanical Engineering

Among casting, forging and forging which has the slowest rate of production?

A beam is said to be of uniform strength, if

Which process allows controlling grain structure of the product?

Stress in a beam due to simple bending is

Stress intensity factor is the critical value of stress at which crack extension occurs.

The bending stress is

The safe stress for a hollow steel column which carries an axial load of 2100 kN is 125 MN/m². if the external diameter of the column is 30cm, what will be the internal diameter?

Which of the following is incorrect about tolerances?

In forging, metal is in which of the following stage?

Consider a 250mmx15mmx10mm steel bar which is free to expand is heated from 15C to 40C. what will be developed?

Quality control charts doesn't depend on which factor?

The bending stress in a straight beam varies linearly with the distance from neural axis like that in a curved beam.

Why tolerances are given to the parts?

In manual assembly, cost of screw is higher than the cost of driving a screw.

How many modes are there for crack propagation?

What is bilateral tolerance?

On bending of a beam, which is the layer which is neither elongated nor shortened?

What is mean clearance?

Cast surfaces have good finishing.

Maximum carbon content in welding is usually limited to