SI Unit Quiz | SI Unit Multiple Choice Questions(MCQs) & Answers

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Questions
1 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.

Answer: 1 m/sec2 while acting on a body of 1 kg mass
2 Angular acceleration is expressed as
A m/s2
B w/s2
C rad/s2
D rad/s

Answer: rad/s2
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3 In SI units, moment is expressed as
A kg-m
B kg-cm
C kg-mm
D all the above

Answer: all the above
4 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

Answer: I α
5 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

Answer: 9.81 N/m2
6 Pick up the correct statement from the following:
A The units of moment of inertia of a plane area, depends upon the units of the area and the length
B The moment of inertia is expressed in m4 if the area is in square metres and the length is also in metres
C The moment of inertia is expressed in cm4 if the area is in square centimetres and the length in centimetres
D All the above

Answer: All the above
7 10-12, is called
A Terra
B pico
C Giga
D Mega

Answer: pico
8 The solid angles are measured in
A degrees
B grades
C radians
D steradians.

Answer: steradians.
9 100 kN/m2 pressure is equal to
A 1 atm
B 1 bar
C 1 m bar
D 1 mm Hg

Answer: 1 bar
10 Pick up the correct statement from the following:
A In S.I. system, pressure is expressed in N/m2
B In S.I. system, surface tension is expressed in Newton per metre
C In S.I. system, force is expressed in Newtons
D All the above

Answer: All the above
11 The fundamental units in S.I. system, are the same as that of View Answer Discuss in Forum Workspace Report
A C.G.S. units
B F.P.S. units
C M.K.S. units
D None of these.

Answer: M.K.S. units
12 The thickness of a micron, is
A 10-3 m
B 10-6 m
C 10-9 m
D 10-12 m

Answer: 10-6 m
13 Pick up the correct statement from the following:
A 1 N force = 0.10197 kgf
B 1 kgf = 9.80665 N
C 1 atm = 101.325 kN/m2
D All the above

Answer: All the above
14 In S.I. system, the symbol for density is
A N/m3
B kg/m3
C m3/s
D kg

Answer: kg/m3
15 Intensity of electric current is expressed in
A volts
B watts
C amperes
D joules.

Answer: amperes
16 The basic quantity in the International system of units, is
A length and mass
B time and temperature
C mole and light intensity
D all the above

Answer: iron
17 SI unit for the surface tension, is
A kg/m3
B kg/m2
C kg/m
D N/m

Answer: N/m
18 To convert the units of M.K.S. to units of S.I., a factor 9.80665 is used for
A mass
B force
C work energy
D all the above

Answer: all the above
19 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.

Answer: 9.8 N in SI system
20 Hertz (Hz) is used to express
A frequency
B power
C Luminous intensity
D electric current intensity

Answer: frequency

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