এসআই ইউনিট

  • ০০। 1 kg wt in gravitational unit equals
    • ক) 8.9 N in SI system
    • খ) 9.8 N in SI system
    • গ) 4.5 N in SI system
    • ঘ) 5.4 N in SI system.
  • ০১। 10-12, is called
    • ক) Terra
    • খ) pico
    • গ) Giga
    • ঘ) Mega
    • ঙ) None of these.
  • ০২। 100 kN/m2 pressure is equal to
    • ক) 1 atm
    • খ) 1 bar
    • গ) 1 m bar
    • ঘ) 1 mm Hg
  • ০৩। Angular acceleration is expressed as
    • ক) m/s2
    • খ) w/s2
    • গ) rad/s2
    • ঘ) rad/s
  • ০৪। Basic unit of thermodynamic temperature, is
    • ক) degree fahrenheit
    • খ) degree centigrade
    • গ) degree kelvin
    • ঘ) degree absolute.
  • ০৫। Candela (Cd) is used to express
    • ক) luminous intensity
    • খ) electric current intensity
    • গ) power
    • ঘ) frequency.
  • ০৬। Hertz (Hz) is used to express
    • ক) Luminous intensity
    • খ) electric current intensity
    • গ) power
    • ঘ) frequency.
  • ০৭। If α is the angular acceleration of a body of moment of inertia I, the torque is
    • ক) I2 α
    • খ) I α
    • গ) I/α
    • ঘ) I2/α
    • ঙ) I α1/2
  • ০৮। In S.I. system, symbol for the specific weight is
    • ক) kg/m3
    • খ) N/m3
    • গ) N/m2
    • ঘ) none of these.
  • ০৯। In S.I. system, the symbol for density is
    • ক) N/m3
    • খ) kg/m3
    • গ) m3/s
    • ঘ) kg
  • ১০। In SI system, the unit of temperature, is
    • ক) Degree centigrade
    • খ) Degree Celsius
    • গ) Kelvin
    • ঘ) Degree Fahrenheit.
  • ১১। In SI units, moment is expressed as
    • ক) kg-m
    • খ) kg-cm
    • গ) kg-mm
    • ঘ) all the above.
  • ১২। Intensity of electric current is expressed in
    • ক) volts
    • খ) watts
    • গ) amperes
    • ঘ) joules.
  • ১৩। Joule or Newton metric is used for
    • ক) Work
    • খ) Torque
    • গ) Energy
    • ঘ) All the above.
  • ১৪। m2/s is used in S.I. system for
    • ক) Surface tension
    • খ) Kinematic viscosity
    • গ) Pressure
    • ঘ) Power.
  • ১৫। N-s/m2 is used in S.I. system for
    • ক) Kinematic viscosity
    • খ) Dynamic viscosity
    • গ) Mass density
    • ঘ) Weight density.
  • ১৬। One Netwon force equals
    • ক) 105 dynes
    • খ) 104 dynes
    • গ) 103 dynes
    • ঘ) 102 dynes
  • ১৭। One Newton force produces an acceleration of
    • ক) 1 cm/sec2 while acting on a body of 1 gm mass
    • খ) 1 cm/sec2 while acting on a body of 1 kg mass
    • গ) 1 m/sec2 while acting on a body of 1 kg mass
    • ঘ) 1 m/sec2 while acting on a body of 1 gm mass.
  • ১৮। One Newton is equivalent to
    • ক) 0.10197 kgf
    • খ) 0.20197 kgf
    • গ) 9.80665 kgf
    • ঘ) 0.97125 kgf
  • ১৯। SI unit for the surface tension, is
    • ক) kg/m3
    • খ) kg/m2
    • গ) kg/m
    • ঘ) N/m
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