SI Units MCQs : This section focuses on the "SI Units". These Multiple Choice Questions (MCQs) should be practiced to improve the SI Units skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
1 kg wt in gravitational unit equals
A. 8.9 N in SI system
B. 9.8 N in SI system
C. 4.5 N in SI system
D. 5.4 N in SI system.
Question 2
100 kN/m2 pressure is equal to
A. 1 atm
B. 1 bar
C. 1 m bar
D. 1 mm Hg
Question 3
10-12, is called
A. Terra
B. pico
C. Giga
D. Mega
Question 4
Angular acceleration is expressed as
A. m/s2
B. w/s2
C. rad/s2
D. rad/s
Question 5
Basic unit of thermodynamic temperature, is
A. degree fahrenheit
B. degree centigrade
C. degree kelvin
D. degree absolute.
Question 6
Candela (Cd) is used to express
A. luminous intensity
B. electric current intensity
C. power
D. frequency.
Question 7
Hertz (Hz) is used to express
A. Luminous intensity
B. electric current intensity
C. power
D. frequency.
Question 8
If α is the angular acceleration of a body of moment of inertia I, the torque is
A. I2 α
B. I α
C. I/α
D. I2/α
Question 9
In S.I. system, symbol for the specific weight is
A. kg/m3
B. N/m3
C. N/m2
D. none of these.
Question 10
In S.I. system, the symbol for density is
A. N/m3
B. kg/m3
C. m3/s
D. kg
Question 11
In SI system, the unit of temperature, is
A. Degree centigrade
B. Degree Celsius
C. Kelvin
D. Degree Fahrenheit.
Question 12
In SI units, moment is expressed as
A. kg-m
B. kg-cm
C. kg-mm
D. all the above.
Question 13
Intensity of electric current is expressed in
A. volts
B. watts
C. amperes
D. joules.
Question 14
Joule or Newton metric is used for
A. Work
B. Torque
C. Energy
D. All the above.
Question 15
m2/s is used in S.I. system for
A. Surface tension
B. Kinematic viscosity
C. Pressure
D. Power.
Question 16
N-s/m2 is used in S.I. system for
A. Kinematic viscosity
B. Dynamic viscosity
C. Mass density
D. Weight density.
Question 17
One Netwon force equals
A. 105 dynes
B. 104 dynes
C. 103 dynes
D. 102 dynes
Question 18
One Newton force produces an acceleration of
A. 1 cm/sec2 while acting on a body of 1 gm mass
B. 1 cm/sec2 while acting on a body of 1 kg mass
C. 1 m/sec2 while acting on a body of 1 kg mass
D. 1 m/sec2 while acting on a body of 1 gm mass.
Question 19
One Newton is equivalent to
A. 0.10197 kgf
B. 0.20197 kgf
C. 9.80665 kgf
D. 0.97125 kgf
Question 20
SI unit for the surface tension, is
A. kg/m3
B. kg/m2
C. kg/m
D. N/m
Question 21
The fundamental units in S.I. System are :
A. Centimetre, gram, second
B. Foot, pound, second
C. Metre, kilogram, second
D. Kilometre, kilogram, minute
Question 22
The fundamental units in S.I. system, are the same as that of
A. C.G.S. units
B. F.P.S. units
C. M.K.S. units
D. None of these.
Question 23
The intensity of pressure at a certain place is 1 kg (f)/m2, the intensity of pressur e in SI units will be
A. 47.88 N/m2
B. 9.81 N/m2
C. 4.882 N/m2
D. 0.07013 N/m2
Question 24
The S.I. unit of Modulus of elasticity is
A. Newton/m2
B. Newton/cm2
C. Newton/mm2
D. all the above.
Question 25
The SI unit of the force is
A. Newton
B. Kilogrames
C. Joule
D. Erg
Question 26
The solid angles are measured in
A. degrees
B. grades
C. radians
D. steradians.
Question 27
The thickness of a micron, is
A. 10-3 m
B. 10-6 m
C. 10-9 m
D. 10-12 m
Question 28
The unit kg/m3 is used for
A. force
B. density
C. volume
D. pressure.