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MCQs

Total Questions : 2607 | Page 258 of 261 pages
Question 2571. 3. A screw is specified by
  1.    Major diameter x pitch
  2.    Minimum diameter x length
  3.    Major diameter x length
  4.    Nominal major diameter
 Discuss Question
Answer: Option D. -> Nominal major diameter
Question 2572. 5. The maximum efficiency of a screw jack having square threads and friction angle of 3O° will be
  1.    11%
  2.    20%
  3.    30%
  4.    33%
 Discuss Question
Answer: Option D. -> 33%
Question 2573. 6. The important criterion in case of riveted joints for material storage and other ordinary tanks is
  1.    Efficiency of joint
  2.    Economy of design
  3.    Strength and rigidly
  4.    Leakage
 Discuss Question
Answer: Option C. -> Strength and rigidly
Question 2574. 8. Permanent moving coil instruments are
  1.    A.C. type
  2.    D.C. type
  3.    Both A.C. and D.C. type
  4.    Could be A.C. or D.C.
 Discuss Question
Answer: Option B. -> D.C. type
Question 2575. 7. Bushed pin flexible coupling is used to joint two shafts which
  1.    Have lateral misalignment
  2.    Whose axes intersect at a small angle
  3.    Are not in exact alignment
  4.    Is the simplest type of rigid coupling
 Discuss Question
Answer: Option C. -> Are not in exact alignment
Question 2576. 9. Moving iron instruments are
  1.    A.C. type
  2.    D.C. type
  3.    Both A.C. and D.C. type
  4.    Do not exist
 Discuss Question
Answer: Option C. -> Both A.C. and D.C. type
Question 2577. 2. Rankine's formula is valid upto the slenderness ratio of
  1.    60
  2.    120
  3.    180
  4.    240
 Discuss Question
Answer: Option B. -> 120
Question 2578. 0. Shaft coupling is used in machinery to
  1.    Alter the vibration characteristics of rotating unit
  2.    Introduce protection against fiver- loads
  3.    Introduce mechanical flexibility
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 2579. 1. Compression formula is valid upto the slenderness ratio of
  1.    10
  2.    20
  3.    30
  4.    40
 Discuss Question
Answer: Option D. -> 40
Question 2580. 3. The buckling load depends on
  1.    Cross-sectional area
  2.    Modulus of elasticity
  3.    Slenderness ratio
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above

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