Engineering Sciences
GATE XE format:mcq PYQs
Build your understanding with focused practice from past exam papers.
Questions 301–310 of 959. Imported answers require independent review unless marked reviewed.
Question 33
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For a potential flow, the fluid velocity is given by
. The slope of the potential line at
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Consider steady incompressible flow of a Newtonian fluid over a horizontal flat plate, as shown in the figure. The boundary layer thickness is proportional to
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In age-hardening of an aluminium alloy, the purpose of solution treatment followed by quenching is to
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The magnetization (M) – magnetic field (H) curves for four different materials are given below. Which one of these materials is most suitable for use as a permanent magnet?
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The band gap of a semiconducting material is ∼ 2 eV. Which one of the following absorption (A) vs. energy (in eV) curves is correct?
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Figures (i) and (ii) show a binary phase diagram and the corresponding Gibbs free energy (
) vs. composition (
) diagram, respectively. Figure (ii) corresponds to which one of the temperatures shown in Figure (i)? 
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Aliovalent doping of
in
leads to the formation of defects. Which one of the following is the correct defect reaction?Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 53
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A student performed X-ray diffraction experiment on a FCC polycrystalline pure metal. The following
values were calculated from the diffraction peaks.
However, the student was negligent and missed noting one of the peaks. Which one of the following Miller indices corresponds to the missing peak?
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Match the lattice planes and directions (in Column I) with the corresponding Miller indices (in Column II):
Column I: (P), (Q), (R), (S); Column II: 1.
; 2.
; 3.
; 4.
.
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Match the hardness test (in Column I) with its indenter type (in Column II).
Column I: (P) Brinell; (Q) Rockwell; (R) Vickers.
Column II: 1. Diamond pyramid; 2. Diamond cone; 3. Tungsten carbide sphere; 4. Steel sphere
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