Q&A Mock Test Mechanical Engineering - Set 04

Mechanical Mock Test - Set 04

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Today, all competitive exams are Multiple Choice Questions(MCQ) based examination system and the main factor is to answer each question in a prescribed time. So, practice as much as possible before the original test you are going to face.

Total number of Multiple Choice Question (MCQ) is 15 and time allotted for each question is 30 seconds. After the allotted time, the question will be marked as un-attempt.

Test Conducted by: ObjectiveBooks.com

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View Test Result:

01. This is the smallest diameter of a screw thread:
     (A) Internal thread diameter
     (B) Minor diameter
     (C) Major diameter
     (D) External thread diameter
     Answer: Option B

02. Which of the following is steam dial?
     (A) Non-coking bituminous coal
     (B) Brown coal
     (C) Pulverised coal
     (D) Coking bituminous coal
     Answer: Option A

03. The angle between the shear plane and __________ is called shear angle.
     (A) Work surface
     (B) Tool face
     (C) Machine surface
     (D) None of these
     Answer: Option A

04. Sensible heat is the heat required to
     (A) Change vapour into liquid
     (B) Change liquid into vapour
     (C) Increase the temperature of a liquid of vapour
     (D) Convert water into steam and superheat it
     Answer: Option C

05. Material used for machine tool beds is
     (A) Cast iron
     (B) Mild steel
     (C) High carbon steel
     (D) Alloy steel
     Answer: Option A

06. Hardness of steel is increased by adding,
     (A) Nickel
     (B) Molybdenum
     (C) Sulphur
     (D) None of above
     Answer: Option B

07. Thermosetting plastic is one,
     (A) Which softens when heated and hardens upon
     (B) Which once having cured by chemical reaction, does not soften or melt upon subsequent heating
     (C) Which can be moulded and remoulded repeated
     (D) Which has linear polymer chain
     Answer: Option B

08. The velocity at which the flow changes from laminar flow to turbulent flow is called
     (A) Critical velocity
     (B) Velocity of approach
     (C) Sub-sonic velocity
     (D) Super-sonic velocity
     Answer: Option A

09. A flywheel is used,
     (A) To limit the fluctuations of speed during each cycle
     (B) To control the mean speed of the engine
     (C) To maintain a constant speed
     (D) To come into action when the speed varies
     Answer: Option A

10. In a thermal power plant, coal from the coal handling plant is moved to the boiler bunker through a
     (A) Belt conveyor
     (B) Bucket conveyor
     (C) Fork lift truck
     (D) Overhead crane
     Answer: Option A

11. The hoop stress in a riveted cylindrical shell of diameter (d), thickness (t) and subjected to an internal pressure (p) is: (where, η = Efficiency of the riveted joint)
     (A) pd/η × t
     (B) pd/η × 2t
     (C) pd/η × 4t
     (D) pd/η × 8t
     Answer: Option B

12. When the particles of a body moves perpendicular to its axis, then the body is said to have
     (A) Longitudinal vibration
     (B) Transverse vibration
     (C) Torsional vibration
     (D) None of these
     Answer: Option B

13. Which law states that the internal energy of a gas is a function of temperature?
     (A) Charles' law
     (B) Joule's law
     (C) Boyle's law
     (D) There is no such law
     Answer: Option B

14. Guest's theory of failure is applicable for following type of materials
     (A) Brittle
     (B) Ductile
     (C) Elastic
     (D) Plastic
     Answer: Option B

15. Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?
     (A) Woodruff key
     (B) Feather key
     (C) Gib-head key
     (D) Tangent key
     Answer: Option D

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