Explore topic-wise MCQs in Food Engineering.

This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Food Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

For a copper pipe, k = 0.3534, temperature difference = 60, B = 0.0125 and A = 850. What is the value of q?

A. 1442 W
B. 1442 kW
C. 1565 W
D. 1565 kW
Answer» C. 1565 W
Discussion
2.

_____ is the equation for unsteady state heat conduction through solid materials.

A. dT/dx= α (d2 T)/ (dt)2
B. dT/dx= α (d2 T)/ (dx)2
C. dT/dt= α (d2 T)/ (dx)2
D. dT/dt= α (d2 T)/ (dt)2
Answer» D. dT/dt= α (d2 T)/ (dt)2
Discussion
3.

NFo= (αtT)/s2. Here ‘s’ stands for half slab thickness. Based on this data, ‘s’ for a chapatti/ dosa will be _____

A. Half slab thickness
B. Full slab thickness
C. One and a half slab thickness
D. Double slab thickness
Answer» C. One and a half slab thickness
Discussion
4.

Statement 1: NFo stands for Fourier number.Statement 2: NFo= (αtT)/s2

A. True, False
B. True, True
C. False, False
D. False, True
Answer» C. False, False
Discussion
5.

Statement 1: α=k/(ρCp)Statement 2: α stands for thermal conductivity.

A. True, False
B. True, True
C. False, False
D. False, True
Answer» B. True, True
Discussion
6.

Statement 1: When the average radius gives an error, log mean radius is used.Statement 2: Log mean radius is given by rL= ( r0– ri )/(ln(r0/ri))

A. True, False
B. True, True
C. False, False
D. False, True
Answer» C. False, False
Discussion
7.

Statement 1: The heat transfer co-efficient in ice is four times that of water.Statement 2: k in conductance is for thermal conductivity.

A. True, False
B. True, True
C. False, False
D. False, True
Answer» C. False, False
Discussion
8.

The equation dq/dA= (k(-dT))/dx is called _____

A. Kirchhoff’s law of conduction
B. Fourier’s law conduction
C. Kirchhoff’s & Fourier’s law conduction
D. None of the mentionedView AnswerAnswer: bExplanation: The equation dq/dA= (k(-dT))/dx is called Fourier’s law conduction.
Answer» C. Kirchhoff’s & Fourier’s law conduction
Discussion
9.

‘a’ refers to ______ and ‘b’ refers to _____

A. Steady state heat transfer, Unsteady state heat transfer
B. Unsteady state heat transfer, Steady state heat transfer
C. None of the mentioned
D. All of the mentioned
Answer» B. Unsteady state heat transfer, Steady state heat transfer
Discussion
10.

______IS_THE_EQUATION_FOR_UNSTEADY_STATE_HEAT_CONDUCTION_THROUGH_SOLID_MATERIALS.?$

A. dT/dx= α (d<sup>2</sup> T)/ (dt)<sup>2</sup>
B. dT/dx= α (d<sup>2</sup> T)/ (dx)<sup>2</sup>
C. dT/dt= α (d<sup>2</sup> T)/ (dx)<sup>2</sup>
D. dT/dt= α (d<sup>2</sup> T)/ (dt)<sup>2</sup>
Answer» D. dT/dt= ‚âà√≠¬¨¬± (d<sup>2</sup> T)/ (dt)<sup>2</sup>
Discussion
11.

For_a_copper_pipe,_k_=_0.3534,_temperature_difference_=_60,_B_=_0.0125_and_A_=_850._What_is_the_value_of_q?$

A. 1442 W
B. 1442 kW
C. 1565 W
D. 1565 kW
Answer» C. 1565 W
Discussion
12.

NFo= (αtT)/s2. Here ‘s’ stands for half slab thickness. Based on this data, ‘s’ for a chapatti/ dosa will be ____?#

A. Half slab thickness
B. Full slab thickness
C. One and a half slab thickness
D. Double slab thickness
Answer» C. One and a half slab thickness
Discussion
13.

Statement 1: NFo stands for Fourier number.

A. /s<sup>2</sup>
B. True, False
C. True, True
D. False, False
Answer» C. True, True
Discussion
14.

Statement 1: α=k/(ρCp)$

A.
B. True, False
C. True, True
Answer» B. True, False
Discussion
15.

Statement 1: When the average radius gives an error, log mean radius is used.

A. /(ln(r<sub>0</sub>/r<sub>i</sub>))
B. True, False
C. True, True
D. False, False
Answer» C. True, True
Discussion
16.

Frozen foods have a higher transfer co-efficient hence they lose heat faster than other food items when exposed to the outside environment.

A. True
B. False
Answer» B. False
Discussion
17.

Statement 1: The heat transfer co-efficient in ice is four times that of water.

A.
B. True, False
C. True, True
Answer» C. True, True
Discussion