UPPSC Lec'21 ME: Daily Practices Quiz. 06-Dec-2021 |_00.1
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UPPSC Lec’21 ME: Daily Practices Quiz. 06-Dec-2021

Quiz: Mechanical Engineering
Exam: UPPSC AE/Lecturer
Topic: Miscellaneous

Each question carries 3 mark
Negative marking: 1 mark
Time: 8 Minutes

Q1. Magnetic forming is an example of
(a) cold forming
(b) hot forming
(c) high energy rate forming
(d) rolling

Q2. Basics shaft and basic hole are those whose upper deviations and lower deviations respectively are
(a) +ve, ‐ve
(b) ‐ve, +ve
(c) Zero, Zero
(d) None of the above

Q3. The most common limit gauge used for inspecting the hole diameter is
(a) Master gauge
(b) Plug gauge
(c) Ring gauge
(d) Snap gauge

Q4. The least count of a metric Vernier caliper having 25divisions on Vernier scale, matching with 24 divisions of main scale (1 main scale divisions = 0.5mm) is
(a) 0.005 mm
(b) 0.01 mm
(c) 0.02 mm
(d) 0.005 mm

S5. Surface roughness on a drawing is represented by
(a) Triangles
(b) Circles
(c) Squares
(d) Rectangles

Q6. Metal removal in electric discharge machining takes place through
(a) ion displacement
(b) melting and vaporization
(c) corrosive reaction
(d) plastic shear

Solutions

S1. Ans(c)
Sol. Magnetic forming is an example of high energy rate forming.
Following are the High energy rate forming processes
(a) Petro‐forming
(b) Magnetic pulse forming
(c) Explosive forming
(d) electro‐hydraulic forming

S2. Ans(c)
Sol. Basics shaft and basic hole are those whose upper deviations and lower deviations are zero, zero respectively.
Basic shaft upper limit is on the base line while basic hole lower limit is on base line.

S3. Ans(b)
Sol. The most common limit gauge used for inspecting the hole diameter is Plug gauge.

S4. Ans(c)
Sol. The least count of a metric Vernier caliper is
Least count = (value of 1 division on main scale)/(number of division on vernier scale)
Least count = 0.5/25
Least count = 0.02 mm

S5. Ans(a)
Sol. Surface roughness on a drawing is represented by triangles.

S6. Ans(b)
Sol. Metal removal in electric discharge machining takes place through melting and vaporization.

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Published by VINAYAK KUMAR

Graduated from BIT Sindri, Postgraduated from IIT BHU Varanasi

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