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
In S.I. system, symbol for the specific weight is
A. kg/m3
B. N/m3
C. N/m2
D. none of these.
Question 2
One Newton is equivalent to
A. 0.10197 kgf
B. 0.20197 kgf
C. 9.80665 kgf
D. 0.97125 kgf
Question 3
The solid angles are measured in
A. degrees
B. grades
C. radians
D. steradians.
Question 4
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 5
One Netwon force equals
A. 105 dynes
B. 104 dynes
C. 103 dynes
D. 102 dynes
Question 6
Intensity of electric current is expressed in
A. volts
B. watts
C. amperes
D. joules.
Question 7
N-s/m2 is used in S.I. system for
A. Kinematic viscosity
B. Dynamic viscosity
C. Mass density
D. Weight density.
Question 8
Hertz (Hz) is used to express
A. Luminous intensity
B. electric current intensity
C. power
D. frequency.
Question 9
In SI units, moment is expressed as
A. kg-m
B. kg-cm
C. kg-mm
D. all the above.
Question 10
Basic unit of thermodynamic temperature, is
A. degree fahrenheit
B. degree centigrade
C. degree kelvin
D. degree absolute.
Question 11
The unit kg/m3 is used for
A. force
B. density
C. volume
D. pressure.
Question 12
100 kN/m2 pressure is equal to
A. 1 atm
B. 1 bar
C. 1 m bar
D. 1 mm Hg
Question 13
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 14
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 15
The thickness of a micron, is
A. 10-3 m
B. 10-6 m
C. 10-9 m
D. 10-12 m
Question 16
The S.I. unit of Modulus of elasticity is
A. Newton/m2
B. Newton/cm2
C. Newton/mm2
D. all the above.
Question 17
In S.I. system, the symbol for density is
A. N/m3
B. kg/m3
C. m3/s
D. kg
Question 18
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 19
10-12, is called
A. Terra
B. pico
C. Giga
D. Mega
Question 20
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 21
Angular acceleration is expressed as
A. m/s2
B. w/s2
C. rad/s2
D. rad/s
Question 22
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 23
In SI system, the unit of temperature, is
A. Degree centigrade
B. Degree Celsius
C. Kelvin
D. Degree Fahrenheit.
Question 24
Candela (Cd) is used to express
A. luminous intensity
B. electric current intensity
C. power
D. frequency.
Question 25
Joule or Newton metric is used for
A. Work
B. Torque
C. Energy
D. All the above.
Question 26
The SI unit of the force is
A. Newton
B. Kilogrames
C. Joule
D. Erg
Question 27
SI unit for the surface tension, is
A. kg/m3
B. kg/m2
C. kg/m
D. N/m
Question 28
m2/s is used in S.I. system for
A. Surface tension
B. Kinematic viscosity
C. Pressure
D. Power.