SI Units - Section 1 (3)

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SI Units - Section 1

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solving MCQs on SI unit problems.

17.

Angular acceleration is expressed as

A.	m/s2
B.	w/s2
C.	rad/s2
D.	rad/s

Answer: Option C

Explanation:

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18.

In SI units, moment is expressed as

A.	kg-m
B.	kg-cm
C.	kg-mm
D.	all the above.

Answer: Option D

Explanation:

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19.

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
E.	I α1/2

Answer: Option B

Explanation:

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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

Answer: Option B

Explanation:

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21.

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.	The moment of inertia is expressed in mm4 if the area is in square millimetres and the length in millimetres
E.	All the above.

Answer: Option E

Explanation:

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22.

10-12, is called

A.	Terra
B.	pico
C.	Giga
D.	Mega
E.	None of these.

Answer: Option B

Explanation:

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23.

The solid angles are measured in

A.	degrees
B.	grades
C.	radians
D.	steradians.

Answer: Option D

Explanation:

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24.

100 kN/m2 pressure is equal to

A.	1 atm
B.	1 bar
C.	1 m bar
D.	1 mm Hg

Answer: Option B

Explanation:

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