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