Explore topic-wise MCQs in Advanced Powder Metallurgy Processing Techniques.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Advanced Powder Metallurgy Processing Techniques knowledge and support exam preparation. Choose a topic below to get started.

1.

Gas atomization results in _______

A. dendritic shape powder
B. irregular shape powder
C. spherical shape powder
D. fine powder
Answer» D. fine powder
Discussion
2.

______ is obtained in water atomization compared to gas atomization.

A. Coarse powder
B. Fine powder
C. Ultra coarse powder
D. Spherical powder
Answer» C. Ultra coarse powder
Discussion
3.

______ apex angles lead to fine particles.

A. 89
B. 0
C. Lower
D. Higher
Answer» E.
Discussion
4.

The particle size decreases with _______

A. increasing surface tension of liquid
B. decreasing velocity of atomizing medium
C. decreasing surface tension of liquid
D. constant velocity of atomizing medium
Answer» D. constant velocity of atomizing medium
Discussion
5.

The empirical relation given by Lubanska for particle size is _______

A. d<sub>av</sub>=D ((( frac{ eta_e}{W_{ eta_g}})(1+ frac{f_1}{f_a}))^{0.5} )
B. d<sub>av</sub>=kD ((( frac{ eta_e}{W_{ eta_g}})(1+ frac{f_1}{f_a}))^{0.5} )
C. d<sub>av</sub>=kD ((( frac{ eta_e}{W_{ eta_g}})(1+ frac{f_1}{f_a}))^{1.5} )
D. d<sub>av</sub>=kD ((( frac{ eta_e}{W_{ eta_g}})(1+ frac{f_a}{f_1}))^{0.5} )
Answer» C. d<sub>av</sub>=kD ((( frac{ eta_e}{W_{ eta_g}})(1+ frac{f_1}{f_a}))^{1.5} )
Discussion
6.

Weber number is given by ______

A. W= ( frac{V^2}{ sigma D rho} )
B. W= ( frac{V^3D}{ sigma rho} )
C. W= ( frac{V^2D}{ sigma rho} )
D. W= ( frac{V^2 rho}{ sigma D} )
Answer» D. W= ( frac{V^2 rho}{ sigma D} )
Discussion
7.

The empirical equation for average particle size (d) in m is ______

A. d= (A frac{ sqrt{ sigma}}{v sqrt{ rho}}+B Big( frac{ sqrt{ mu}}{ sigma rho} Big)^{0.45}(1000 frac{f_1}{f_a})^{1.5} )
B. d= (A frac{ sqrt{ sigma}}{v sqrt{ rho}}+B Big( frac{ sqrt{ mu}}{ sigma rho} Big)^{1.5}(1000 frac{f_1}{f_a})^{0.45} )
C. d= (A frac{ sqrt{ sigma}}{v sqrt{ rho}}+B Big( frac{ sqrt{ mu}}{ sigma rho} Big)^{0.45}(1000 frac{f_a}{f_1})^{1.5} )
D. d= (A frac{ sqrt{ sigma}}{v sqrt{ rho}}+B Big( frac{ sqrt{ mu}}{ sigma rho} Big)^{0.45}(10000 frac{f_1}{f_a})^{1.5} )
Answer» B. d= (A frac{ sqrt{ sigma}}{v sqrt{ rho}}+B Big( frac{ sqrt{ mu}}{ sigma rho} Big)^{1.5}(1000 frac{f_1}{f_a})^{0.45} )
Discussion
8.

Which of the following factors affect the particle size of atomized powder?

A. Nozzle configuration
B. Atomizing medium and nozzle configuration
C. Properties of metal, atomizing medium and nozzle configuration
D. Atomizing medium
Answer» D. Atomizing medium
Discussion