Test: Basic Concepts (Structure Of Solids), Hardness Test & Crystalline Material - 1 - Mechanical Engineering MCQ

Which one of the following factors is more relevant to represent completesolubility of two metals in each other? 

Herbert cloudburst Hardness test is conducted to know 

Which of the following statement is true about brittle fracture?  

A measure of Rockwell hardness is the  

The material property which depends only on the basic crystal structure is  

Which one of the following pairs of axis lengths (a, b, c) and inter-axial angles (α,β, γ) represents the tetragonal crystal system?  

Match List-I (Crystal Structure) with List-II (Example) and select the correct answer using the codes given below the Lists:  
List-I                                                           List-II
(Crystal Structure)                                   (Example)
A. Simple Cubic                                     1. Zinc
B. Body-centered Cubic                         2. Copper
C. Face-centered Cubic                         3. Alpha iron at room temperature
D. Hexagonal Close Packed                  4. Manganese
Codes: A B C D                           A B C D
        (a) 4 3 1 2                       (b) 4 3 2 1
        (c) 3 4 2 1                        (d) 3 4 1 2

What is the planar density of (100) plane in FCC (face-centred cubic) crystal with unit cell side a equal to? 

In Zinc Blende structure, each atom is surrounded by four atoms of the oppositekind which are located at the comers of which one of the following? 

A metal has FCC structure. Suppose its atomic weight and atomic radius is A and r respectively. Let N denotes Avogadro's number. What is the density of the material? 

Consider the following temperature ranges:  
1. Room temperature
2. 0 to 910°C
3. 910°C to 1400^oC
4. 1400^oC to below melting pointIn which of the above temperature ranges ferrite with body centered cubic structure isindicated in, the Fe-Fe₃C phase diagram?

The effective number of lattice points in the unit cell of simple cubic, bodycentered cubic, and face cantered cubic space lattices, respectively, are 

The micro structure composition of pearlite for a Fe₃C diagram consists of  

Atomic packing factor (APF) in the case of copper crystal is 

Which one of the following is the correct ascending order of packing density forthe given crystal structures of metals? 

Assertion (A): Plastic deformation in metals and alloys is a permanentdeformation under load. This property is useful in obtaining products by coldrolling.  
Reason (R): Plastic or permanent deformation in metal or alloy is caused bymovement or dislocations.

The B.C.C. and H.C.P. metals undergo plastic deformation by: