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MCQs

Total Questions : 109 | Page 4 of 11 pages
Question 31.


The bar used for
defining the standard metre at the International office of weights and
measures at Sevres near Paris, is composed of



  1.    50% platinum and 50% iridium
  2.    60% platinum and 40% iridium
  3.    70% platinum and 30% iridium
  4.    80% platinum and 20% iridium
  5.    90% platinum and 10% iridium
 Discuss Question
Answer: Option E. -> 90% platinum and 10% iridium


Question 32.

Candela (Cd) is used to express



  1.    uminous intensity
  2.    electric current intensity
  3.    power
  4.    frequency.
 Discuss Question
Answer: Option A. -> uminous intensity


Question 33.


The fundamental units in S.I. System are :



  1.    Centimetre, gram, second
  2.    Foot, pound, second
  3.    Metre, kilogram, second
  4.    Kilometre, kilogram, minute
  5.    None of these.
 Discuss Question
Answer: Option C. -> Metre, kilogram, second


Question 34.


Hertz (Hz) is used to express



  1.    Luminous intensity
  2.    electric current intensit
  3.    power
  4.    frequency.
 Discuss Question
Answer: Option D. -> frequency.


Question 35.

The unit kg/m3 is used for



  1.    force
  2.    density
  3.    volume
  4.    pressure.
 Discuss Question
Answer: Option B. -> density


Question 36.


One Newton force produces an acceleration of




  1.    1 cm/sec2 while acting on a body of 1 gm mass
  2.    1 cm/sec2 while acting on a body of 1 kg mass
  3.    1 m/sec2 while acting on a body of 1 kg mass
  4.    1 m/sec2 while acting on a body of 1 gm mass.
 Discuss Question
Answer: Option C. -> 1 m/sec2 while acting on a body of 1 kg mass


Question 37.

The intensity of pressure at a certain place is 1 kg (f)/m2, the intensity of pressur e in SI units will be



  1.    47.88 N/m2
  2.    9.81 N/m2
  3.    4.882 N/m2
  4.    0.07013 N/m2
 Discuss Question
Answer: Option B. -> 9.81 N/m2


Question 38.

Angular acceleration is expressed as



  1.    m/s2
  2.    w/s2
  3.    rad/s2
  4.    rad/s
 Discuss Question
Answer: Option C. -> rad/s2


Question 39.

 

In SI units, moment is expressed as



  1.    kg-m
  2.    kg-cm
  3.    kg-mm
  4.    all the above.
 Discuss Question
Answer: Option D. -> all the above.


Question 40.

Pick up the correct statement from the following:


  1.    The units of moment of inertia of a plane area, depends upon the units of the area and the length
  2.    The moment of inertia is expressed in m4 if the area is in square metres and the length is also in metres
  3.    The moment of inertia is expressed in cm4 if the area is in square centimetres and the length in centimetres
  4.    The moment of inertia is expressed in mm4 if the area is in square millimetres and the length in millimetres
  5.    All the above.
 Discuss Question
Answer: Option E. -> All the above.


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