Mechanical Live Test - Set 08

Mechanical Mock Test - Set 08

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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. The most preferred process for casting gas turbine blades is
     (A) Die casting
     (B) Shell moulding
     (C) Investment moulding
     (D) Sand casting
     Answer: Option B

02. During humidification process, __________ increases.
     (A) Wet bulb temperature
     (B) Relative humidity
     (C) Dry bulb temperature
     (D) Specific humidity
     Answer: Option B

03. De-Laval turbine is a
     (A) Single rotor impulse turbine
     (B) Multi-rotor impulse turbine
     (C) Impulse reaction turbine
     (D) None of these
     Answer: Option A

04. The silicon carbide abrasive is chiefly used for grinding
     (A) Cemented carbide
     (B) Ceramic
     (C) Cast iron
     (D) All of these
     Answer: Option D

05. In shaft-basis system, the basis shaft is one
     (A) Whose upper deviation is zero
     (B) Whose upper and lower deviations are zero
     (C) Whose lower deviation is zero
     (D) None of the above
     Answer: Option A

06. According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centres will lie on a
     (A) Straight line
     (B) Parabolic curve
     (C) Triangle
     (D) Rectangle
     Answer: Option A

07. A steel containing 16 to 18% chromium and about 0.12% carbon is called
     (A) Ferritic stainless steel
     (B) Austenitic stainless steel
     (C) Martenistic stainless steel
     (D) Nickel steel
     Answer: Option A

08. A cycle consisting of two adiabatic and two constant pressure processes is known as
     (A) Otto cycle
     (B) Ericsson cycle
     (C) Joule cycle
     (D) Stirling cycle
     Answer: Option C

09. In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)
     (A) 2 d
     (B) 3 d
     (C) 4 d
     (D) 5 d
     Answer: Option B

10. Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the
     (A) Force of adhesion
     (B) Force of cohesion
     (C) Force of friction
     (D) Force of diffusion
     Answer: Option B

11. The insulation ability of an insulator with the presence of moisture would
     (A) Increase
     (B) Decrease
     (C) Remain unaffected
     (D) May increase/decrease depending on temperature and thickness of insulation
     Answer: Option B

12. An oil seal is used
     (A) To prevent leakage of fluid between two part in relative motion
     (B) To prevent leakage of fluid between two stationary part
     (C) To prevent leakage of fluid between cylinder and cylinder cover
     (D) For none of the above
     Answer: Option A

13. The neutral axis of the cross-section of a beam is that axis at which the bending stress is
     (A) Zero
     (B) Minimum
     (C) Maximum
     (D) Infinity
     Answer: Option A

14. The maximum frictional force which comes into play when a body just begins to slide over another surface is called
     (A) Limiting friction
     (B) Sliding friction
     (C) Rolling friction
     (D) Kinematic friction
     Answer: Option A

15. The refrigerant widely used in domestic refrigerators is
     (A) Ammonia
     (B) Carbon dioxide
     (C) Sulphur dioxide
     (D) R-12
     Answer: Option D

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