Explore topic-wise MCQs in Manufacturing Engineering.

This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

For conduction through a spherical wall with constant thermal conductivity and with inner side temperature greater than outer wall temperature, (one dimensional heat transfer), what is the type of temperature distribution?

A. Linear
B. Parabolic
C. Hyperbolic
D. Logarithmic
Answer» D. Logarithmic
2.

The outer surface of a long cylinder is maintained at constant temperature. The cylinder does not have any heat source. The temperature in the cylinder will?

A. Increase linearly with radius
B. Decrease linearly with radius
C. Be independent of radius
D. Vary logarithmically with radius
Answer» E.
3.

Consider the following statements:The Fourier heat conduction equation Q = -kA(dT/dx) presumesi. Steady-state conditionsii. Constant value of thermal conductivity.iii. Uniform temperatures at the wall surfacesiv. One-dimensional heat flow.Which of the above statements are correct?

A. (i), (ii) and (iii) are correct
B. (i), (ii) and (iv) are correct
C. (ii), (iii) and (iv) are correct
D. (i), (iii) and (iv) are correct
Answer» E.
4.

A copper block and an air mass block having similar dimensions are subjected to symmetrical heat transfer from one face of each block. The other face of the block will be reaching the same temperature at a rate is?

A. Faster in air block
B. Faster in copper block
C. Equal in air as well as copper block
D. Cannot be predicted with the given information
Answer» C. Equal in air as well as copper block
5.

In descending order of magnitude, the thermal conductivity of:i. Pure iron,ii. Liquid water,iii. Saturated water vapour, andiv. Pure aluminiumcan be arranged as?

A. (i), (ii), (iii) and (iv)
B. (ii), (iii), (i) and (iv)
C. (iv), (i), (ii) and (iii)
D. (iv), (iii), (ii) and (i)
Answer» D. (iv), (iii), (ii) and (i)
6.

For a given heat flow and for the same thickness, the temperature drop across the material will be maximum for ____________

A. copper
B. steel
C. glass-wool
D. refractory brick
Answer» D. refractory brick
7.

With an increase in the thickness of insulation around a circular pipe, heat loss to surrounding due to ____________

A. convection increase, while that the due to conduction decreases
B. convection decrease, while that due to conduction increases
C. convection and conduction decreases
D. convection and conduction increases
Answer» C. convection and conduction decreases
8.

The slower the rate of pouring molten metal into the mold, the nature of fluidity will be?

A. lower
B. higher
C. constant
D. either higher or lower
Answer» B. higher
9.

The liquid metal reduces its fluidity mainly due to?

A. high viscosity
B. high friction factor
C. high surface tension
D. high turbulence
Answer» D. high turbulence
10.

The capability of molten metal to fill mold cavities is called ____________

A. viscosity
B. fluidity
C. turbulence
D. velocity
Answer» C. turbulence
11.

The flow of fluid which is highly chaotic is called as?

A. Laminar
B. Turbulence
C. Reynolds
D. Irrotational flow
Answer» C. Reynolds
12.

For conduction through a spherical wall with constant thermal conductivity and with inner side temperature greater than outer wall temperature, (one dimensional heat transfer), what is the type of temperature distribution?$

A. Linear
B. Parabolic
C. Hyperbolic
D. None of the mentioned
Answer» D. None of the mentioned
13.

A copper block and an air mass block having similar dimensions are subjected to symmetrical heat transfer from one face of each block. The other face of the block will be reaching the same temperature at a rate?

A. Faster in air block
B. Faster in copper block
C. Equal in air as well as copper block
D. Cannot be predicted with the given information
Answer» C. Equal in air as well as copper block
14.

For a given heat flow and for the same thickness, the temperature drop across the material will be maximum for

A. Copper
B. Steel
C. Glass-wool
D. Refractory brick
Answer» D. Refractory brick
15.

With an increase in the thickness of insulation around a circular pipe, heat loss to surrounding due to

A. convection increase, while that the due to conduction decreases
B. convection decrease, while that due to conduction increases
C. convection and conduction decreases
D. convection and conduction increases
Answer» C. convection and conduction decreases
16.

The slower the rate of pouring molten metal into the mold, the ___________ is the fluidity.

A. lower
B. higher
C. constant
D. none of the mentioned
Answer» B. higher
17.

A high _______________ of the liquid metal reduces fluidity.

A. viscosity
B. fluidity
C. surface tension
D. none of the mentioned
Answer» D. none of the mentioned
18.

The capability of molten metal to fill mold cavities is called

A. viscosity
B. fluidity
C. laminar
D. none of the mentioned
Answer» C. laminar
19.

_____________ is flow that is highly chaotic.

A. Laminar
B. Turbulence
C. Reynolds
D. None of the mentioned
Answer» C. Reynolds