# MCQ on Mechanical Engineering Notes - Mechanical Engineering

## Mechanical Engineering: MCQ on Mechanical Engineering Notes - Mechanical Engineering

The document MCQ on Mechanical Engineering Notes - Mechanical Engineering is a part of Mechanical Engineering category.
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``` Page 1

Topic Questi
on No.
Question Option A Option B Option C Option D Answer
Key
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 1
The term
deformation
per unit length
is applied for Stress Strain
Modulus of
elasticity
Modulus of
Rigidity B
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 2
In a universal
testing
machine
during the
testing of a
specimen of
original cross -
sectional area
1 cm² the
applied was
7.5 tonnes and
neck area 0.6
sq.cm the
ultimate tensile
strength of the
specimen is
4.6.
tonnes/cm²
7.5
tonnes/cm²
12.5
tonnes/cm²
18.75
tonnes/cm² C
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 3
The elongation
produced in a
rod by its own
weight, of
length (l) and
diameter (d)
rigidly fixed at
the upper end
and hanging is
equal to: - (
where w =
weight per unit
volume of the
rod and E =
modulus of
elasticity ) wl/2E wl²/2E wl³/2E wl
4
/2E
Engineering
Mechanics
and Strength
of Materials /
Elastic limit
and elastic
constants 4
The bulk
modulus of the
body is equal
to m E/ 3 (m - 2)
m E/ 3 (m +
2) m E/ 2 (m - 2)
m E/ 2 (m +
2) A
Engineering
Mechanics
and Strength
of Materials /
Elastic limit
and elastic
constants 5
An alloy
specimen has
a modulus of
elasticity of
120 GPa and
modulus of
rigidity of 45
GPa. The 3-Jan 2-Jan 4-Jan 5-Jan
Not
proper
Page 2

Topic Questi
on No.
Question Option A Option B Option C Option D Answer
Key
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 1
The term
deformation
per unit length
is applied for Stress Strain
Modulus of
elasticity
Modulus of
Rigidity B
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 2
In a universal
testing
machine
during the
testing of a
specimen of
original cross -
sectional area
1 cm² the
applied was
7.5 tonnes and
neck area 0.6
sq.cm the
ultimate tensile
strength of the
specimen is
4.6.
tonnes/cm²
7.5
tonnes/cm²
12.5
tonnes/cm²
18.75
tonnes/cm² C
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 3
The elongation
produced in a
rod by its own
weight, of
length (l) and
diameter (d)
rigidly fixed at
the upper end
and hanging is
equal to: - (
where w =
weight per unit
volume of the
rod and E =
modulus of
elasticity ) wl/2E wl²/2E wl³/2E wl
4
/2E
Engineering
Mechanics
and Strength
of Materials /
Elastic limit
and elastic
constants 4
The bulk
modulus of the
body is equal
to m E/ 3 (m - 2)
m E/ 3 (m +
2) m E/ 2 (m - 2)
m E/ 2 (m +
2) A
Engineering
Mechanics
and Strength
of Materials /
Elastic limit
and elastic
constants 5
An alloy
specimen has
a modulus of
elasticity of
120 GPa and
modulus of
rigidity of 45
GPa. The 3-Jan 2-Jan 4-Jan 5-Jan
Not
proper
Poisson's ratio
of the material
is.
Engineering
Mechanics
and Strength
of Materials /
Thin walled
pressure
vessels 6
In case of thin
cylinder, which
one is a
correct
statement
The hoop
stress in a
thin
cylinderical
shell is
compressive
stress.
The ratio of
hoop stress
to longitudinal
stress for a
thin
cylindrical
shell is 1/2
The shear
stress in a
thin spherical
shell is more
than that of in
a thin
cylindrical
shell.
The design of
thin
cylindrical
shell is based
upon hoop
stress B
Engineering
Mechanics
and Strength
of Materials /
Thin walled
pressure
vessels 7
The
longitudinal
strain in case
of thin cylinder
shell, when
subjected to
internal
pressure (p), is
equal to
( pd/2tE) ( 1/2
- 1/m )
( pd/2tE) (1 -
1/2m )
( pd/4tE) (1 -
1/m )
( 3pd/4tE) ( 1
- 1/m ) A
Engineering
Mechanics
and Strength
of Materials /
Stress in
composite
barsm,
Torsion of
circular shafts 8
Polar moment
of inertia of a
solid circular
shaft of
diameter D is
equal to pD³/32 pD
4
/32 pD³/64 pD
4
/64 D
Engineering
Mechanics
and Strength
of Materials /
Stress in
composite
barsm,
Torsion of
circular shafts 9
A steel rod of 3
cm of diameter
is enclosed
centrally in a
hollow copper
tube of
external
diameter 5 cm
and internal
diameter of 4
cm. The
composite bar
is then
subjected to
an axial pull of
45000 N. If the
length of each
bar is equal to
15 cm , E for
steel = 2.1 X
105 N/mm2
and for copper
is = 1.1 X105
N/mm2 ,the
stress in tube
is 21.88 N/mm² 41.77 N/mm² 31. 88 N/mm² 51.77 N/mm²
Engineering
Mechanics
and Strength
of Materials /
Bending
moments and
shear force 10
A simply
supported
beam of length
L carrying a
concentrated
at the centre of wL wL/ 4 wL/2 wL/8 B
Page 3

Topic Questi
on No.
Question Option A Option B Option C Option D Answer
Key
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 1
The term
deformation
per unit length
is applied for Stress Strain
Modulus of
elasticity
Modulus of
Rigidity B
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 2
In a universal
testing
machine
during the
testing of a
specimen of
original cross -
sectional area
1 cm² the
applied was
7.5 tonnes and
neck area 0.6
sq.cm the
ultimate tensile
strength of the
specimen is
4.6.
tonnes/cm²
7.5
tonnes/cm²
12.5
tonnes/cm²
18.75
tonnes/cm² C
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 3
The elongation
produced in a
rod by its own
weight, of
length (l) and
diameter (d)
rigidly fixed at
the upper end
and hanging is
equal to: - (
where w =
weight per unit
volume of the
rod and E =
modulus of
elasticity ) wl/2E wl²/2E wl³/2E wl
4
/2E
Engineering
Mechanics
and Strength
of Materials /
Elastic limit
and elastic
constants 4
The bulk
modulus of the
body is equal
to m E/ 3 (m - 2)
m E/ 3 (m +
2) m E/ 2 (m - 2)
m E/ 2 (m +
2) A
Engineering
Mechanics
and Strength
of Materials /
Elastic limit
and elastic
constants 5
An alloy
specimen has
a modulus of
elasticity of
120 GPa and
modulus of
rigidity of 45
GPa. The 3-Jan 2-Jan 4-Jan 5-Jan
Not
proper
Poisson's ratio
of the material
is.
Engineering
Mechanics
and Strength
of Materials /
Thin walled
pressure
vessels 6
In case of thin
cylinder, which
one is a
correct
statement
The hoop
stress in a
thin
cylinderical
shell is
compressive
stress.
The ratio of
hoop stress
to longitudinal
stress for a
thin
cylindrical
shell is 1/2
The shear
stress in a
thin spherical
shell is more
than that of in
a thin
cylindrical
shell.
The design of
thin
cylindrical
shell is based
upon hoop
stress B
Engineering
Mechanics
and Strength
of Materials /
Thin walled
pressure
vessels 7
The
longitudinal
strain in case
of thin cylinder
shell, when
subjected to
internal
pressure (p), is
equal to
( pd/2tE) ( 1/2
- 1/m )
( pd/2tE) (1 -
1/2m )
( pd/4tE) (1 -
1/m )
( 3pd/4tE) ( 1
- 1/m ) A
Engineering
Mechanics
and Strength
of Materials /
Stress in
composite
barsm,
Torsion of
circular shafts 8
Polar moment
of inertia of a
solid circular
shaft of
diameter D is
equal to pD³/32 pD
4
/32 pD³/64 pD
4
/64 D
Engineering
Mechanics
and Strength
of Materials /
Stress in
composite
barsm,
Torsion of
circular shafts 9
A steel rod of 3
cm of diameter
is enclosed
centrally in a
hollow copper
tube of
external
diameter 5 cm
and internal
diameter of 4
cm. The
composite bar
is then
subjected to
an axial pull of
45000 N. If the
length of each
bar is equal to
15 cm , E for
steel = 2.1 X
105 N/mm2
and for copper
is = 1.1 X105
N/mm2 ,the
stress in tube
is 21.88 N/mm² 41.77 N/mm² 31. 88 N/mm² 51.77 N/mm²
Engineering
Mechanics
and Strength
of Materials /
Bending
moments and
shear force 10
A simply
supported
beam of length
L carrying a
concentrated
at the centre of wL wL/ 4 wL/2 wL/8 B
diagram span will have
maximum
bending
moment of
Engineering
Mechanics
and Strength
of Materials /
Bending
moments and
shear force
diagram 11
A beam of
uniform
strength is one
which has
same
Bending
stress at
every section
Deflection
throughout
the beam
Bending
moment
throughout
the beam
Shear force
throughout
the beam C
Engineering
Mechanics
and Strength
of Materials /
Bending
moments and
shear force
diagram 12
A simply
supported
beam a
uniformly
distributed
unit length
over the whole
span (l). The
point of
contraflexure
is at
The suppoted
end
The middle of
the beam
No point of
contraflexture
A distance
(l/4) from the
supported
end C
Engineering
Mechanics
and Strength
of Materials /
Equilibrium of
Forces 13
If a number of
forces are
acting at a
point, their
resultant will
be inclined at
an angle ? with
the horizontal,
such that
tan ? =
?V/?H
tan ? =
?Vx?H
tan ? =
?Hx?V
tan ? =
?H/?V A
Engineering
Mechanics
and Strength
of Materials /
Equilibrium of
Forces 14
If two forces of
magnitude 'P'
act at an angle
'?' there
resultant will
be 2P Cos? P Cos2? P Cos? Sin? 2P Cos?/2 A
Engineering
Mechanics
and Strength
of Materials /
Equilibrium of
Forces 15
Two forces
which when
acting at right
angles
produce
resultant force
of 10 and
when acting at
60° produce
resultant of
v148. These
forces are 3 and 4 6 and 8 5 and 5 4 and 6 B
Engineering
Mechanics
and Strength
of Materials /
Law of
motion,
Friction 16
If the angle of
friction is zero
a body will
experience Infinite friction Zero Friction
The force of
friction will
act normal to
the plane
The force of
friction will
act in the
direction of
motion B
Engineering
Mechanics
and Strength 17
The least force
to drag a body
of 600N along 200v3 N 450 N 300 N 250 N A
Page 4

Topic Questi
on No.
Question Option A Option B Option C Option D Answer
Key
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 1
The term
deformation
per unit length
is applied for Stress Strain
Modulus of
elasticity
Modulus of
Rigidity B
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 2
In a universal
testing
machine
during the
testing of a
specimen of
original cross -
sectional area
1 cm² the
applied was
7.5 tonnes and
neck area 0.6
sq.cm the
ultimate tensile
strength of the
specimen is
4.6.
tonnes/cm²
7.5
tonnes/cm²
12.5
tonnes/cm²
18.75
tonnes/cm² C
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 3
The elongation
produced in a
rod by its own
weight, of
length (l) and
diameter (d)
rigidly fixed at
the upper end
and hanging is
equal to: - (
where w =
weight per unit
volume of the
rod and E =
modulus of
elasticity ) wl/2E wl²/2E wl³/2E wl
4
/2E
Engineering
Mechanics
and Strength
of Materials /
Elastic limit
and elastic
constants 4
The bulk
modulus of the
body is equal
to m E/ 3 (m - 2)
m E/ 3 (m +
2) m E/ 2 (m - 2)
m E/ 2 (m +
2) A
Engineering
Mechanics
and Strength
of Materials /
Elastic limit
and elastic
constants 5
An alloy
specimen has
a modulus of
elasticity of
120 GPa and
modulus of
rigidity of 45
GPa. The 3-Jan 2-Jan 4-Jan 5-Jan
Not
proper
Poisson's ratio
of the material
is.
Engineering
Mechanics
and Strength
of Materials /
Thin walled
pressure
vessels 6
In case of thin
cylinder, which
one is a
correct
statement
The hoop
stress in a
thin
cylinderical
shell is
compressive
stress.
The ratio of
hoop stress
to longitudinal
stress for a
thin
cylindrical
shell is 1/2
The shear
stress in a
thin spherical
shell is more
than that of in
a thin
cylindrical
shell.
The design of
thin
cylindrical
shell is based
upon hoop
stress B
Engineering
Mechanics
and Strength
of Materials /
Thin walled
pressure
vessels 7
The
longitudinal
strain in case
of thin cylinder
shell, when
subjected to
internal
pressure (p), is
equal to
( pd/2tE) ( 1/2
- 1/m )
( pd/2tE) (1 -
1/2m )
( pd/4tE) (1 -
1/m )
( 3pd/4tE) ( 1
- 1/m ) A
Engineering
Mechanics
and Strength
of Materials /
Stress in
composite
barsm,
Torsion of
circular shafts 8
Polar moment
of inertia of a
solid circular
shaft of
diameter D is
equal to pD³/32 pD
4
/32 pD³/64 pD
4
/64 D
Engineering
Mechanics
and Strength
of Materials /
Stress in
composite
barsm,
Torsion of
circular shafts 9
A steel rod of 3
cm of diameter
is enclosed
centrally in a
hollow copper
tube of
external
diameter 5 cm
and internal
diameter of 4
cm. The
composite bar
is then
subjected to
an axial pull of
45000 N. If the
length of each
bar is equal to
15 cm , E for
steel = 2.1 X
105 N/mm2
and for copper
is = 1.1 X105
N/mm2 ,the
stress in tube
is 21.88 N/mm² 41.77 N/mm² 31. 88 N/mm² 51.77 N/mm²
Engineering
Mechanics
and Strength
of Materials /
Bending
moments and
shear force 10
A simply
supported
beam of length
L carrying a
concentrated
at the centre of wL wL/ 4 wL/2 wL/8 B
diagram span will have
maximum
bending
moment of
Engineering
Mechanics
and Strength
of Materials /
Bending
moments and
shear force
diagram 11
A beam of
uniform
strength is one
which has
same
Bending
stress at
every section
Deflection
throughout
the beam
Bending
moment
throughout
the beam
Shear force
throughout
the beam C
Engineering
Mechanics
and Strength
of Materials /
Bending
moments and
shear force
diagram 12
A simply
supported
beam a
uniformly
distributed
unit length
over the whole
span (l). The
point of
contraflexure
is at
The suppoted
end
The middle of
the beam
No point of
contraflexture
A distance
(l/4) from the
supported
end C
Engineering
Mechanics
and Strength
of Materials /
Equilibrium of
Forces 13
If a number of
forces are
acting at a
point, their
resultant will
be inclined at
an angle ? with
the horizontal,
such that
tan ? =
?V/?H
tan ? =
?Vx?H
tan ? =
?Hx?V
tan ? =
?H/?V A
Engineering
Mechanics
and Strength
of Materials /
Equilibrium of
Forces 14
If two forces of
magnitude 'P'
act at an angle
'?' there
resultant will
be 2P Cos? P Cos2? P Cos? Sin? 2P Cos?/2 A
Engineering
Mechanics
and Strength
of Materials /
Equilibrium of
Forces 15
Two forces
which when
acting at right
angles
produce
resultant force
of 10 and
when acting at
60° produce
resultant of
v148. These
forces are 3 and 4 6 and 8 5 and 5 4 and 6 B
Engineering
Mechanics
and Strength
of Materials /
Law of
motion,
Friction 16
If the angle of
friction is zero
a body will
experience Infinite friction Zero Friction
The force of
friction will
act normal to
the plane
The force of
friction will
act in the
direction of
motion B
Engineering
Mechanics
and Strength 17
The least force
to drag a body
of 600N along 200v3 N 450 N 300 N 250 N A
of Materials /
Law of
motion,
Friction
a rough
horizontal
plane (angle of
friction=30deg)
is
Engineering
Mechanics
and Strength
of Materials /
Buckling of
columns-
Euler’s and
Rankin’s
theories 18
column having
the tendency
to deflect. On
account of this
tendency, the
Decreases
with the
decrease in
length
Decreases
with the
increase in
length
First
decreases
then
increases
with the
decrease in
length
First
increases
then
decreases
with the
decrease in
length  C
Engineering
Mechanics
and Strength
of Materials /
Buckling of
columns-
Euler’s and
Rankin’s
theories 19
The ratio of
for a column of
length 'l' with
both ends
fixed to the
of the same
column with
both ends
hinged, is
equal to 2 4 0.25 0.5 B
Engineering
Mechanics
and Strength
of Materials /
Buckling of
columns-
Euler’s and
Rankin’s
theories 20
A solid round
circular bar 3
m long and 5
cm in diameter
is used as a
strut with both
ends hinged
having
E=2x105
N/mm2. The
is 67.28 KN 134.56 KN 269.12 KN 16.82 KN

2nd Law of
Thermodynam
ics / Definition
of Sink 21
What is heat
sink in
thermodynami
cs?
Device to
absorb heat
Device to
absorb mass
Device from
which heat is
transferred
Device from
which mass
is transferred B
2nd Law of
Thermodynam
ics / Definition
of Sink 22
proposed a
reversible
cyclein in
1824, in a
Carnot Cycle
the working
medium
at which of the
following?
No
temperature
required
Lower
temperature
Higher
temperature
Constant
temperature A
2nd Law of
Thermodynam
ics / Definition
of Sink 23
A heat engine
works on a
Carnot cycle
with a heat
sink at a
temperature of
27°C. What
would be the
temperature of 30°C 60°C 90°C 100°C  A
Page 5

Topic Questi
on No.
Question Option A Option B Option C Option D Answer
Key
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 1
The term
deformation
per unit length
is applied for Stress Strain
Modulus of
elasticity
Modulus of
Rigidity B
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 2
In a universal
testing
machine
during the
testing of a
specimen of
original cross -
sectional area
1 cm² the
applied was
7.5 tonnes and
neck area 0.6
sq.cm the
ultimate tensile
strength of the
specimen is
4.6.
tonnes/cm²
7.5
tonnes/cm²
12.5
tonnes/cm²
18.75
tonnes/cm² C
Engineering
Mechanics
and Strength
of Materials /
Concepts of
stress and
strain 3
The elongation
produced in a
rod by its own
weight, of
length (l) and
diameter (d)
rigidly fixed at
the upper end
and hanging is
equal to: - (
where w =
weight per unit
volume of the
rod and E =
modulus of
elasticity ) wl/2E wl²/2E wl³/2E wl
4
/2E
Engineering
Mechanics
and Strength
of Materials /
Elastic limit
and elastic
constants 4
The bulk
modulus of the
body is equal
to m E/ 3 (m - 2)
m E/ 3 (m +
2) m E/ 2 (m - 2)
m E/ 2 (m +
2) A
Engineering
Mechanics
and Strength
of Materials /
Elastic limit
and elastic
constants 5
An alloy
specimen has
a modulus of
elasticity of
120 GPa and
modulus of
rigidity of 45
GPa. The 3-Jan 2-Jan 4-Jan 5-Jan
Not
proper
Poisson's ratio
of the material
is.
Engineering
Mechanics
and Strength
of Materials /
Thin walled
pressure
vessels 6
In case of thin
cylinder, which
one is a
correct
statement
The hoop
stress in a
thin
cylinderical
shell is
compressive
stress.
The ratio of
hoop stress
to longitudinal
stress for a
thin
cylindrical
shell is 1/2
The shear
stress in a
thin spherical
shell is more
than that of in
a thin
cylindrical
shell.
The design of
thin
cylindrical
shell is based
upon hoop
stress B
Engineering
Mechanics
and Strength
of Materials /
Thin walled
pressure
vessels 7
The
longitudinal
strain in case
of thin cylinder
shell, when
subjected to
internal
pressure (p), is
equal to
( pd/2tE) ( 1/2
- 1/m )
( pd/2tE) (1 -
1/2m )
( pd/4tE) (1 -
1/m )
( 3pd/4tE) ( 1
- 1/m ) A
Engineering
Mechanics
and Strength
of Materials /
Stress in
composite
barsm,
Torsion of
circular shafts 8
Polar moment
of inertia of a
solid circular
shaft of
diameter D is
equal to pD³/32 pD
4
/32 pD³/64 pD
4
/64 D
Engineering
Mechanics
and Strength
of Materials /
Stress in
composite
barsm,
Torsion of
circular shafts 9
A steel rod of 3
cm of diameter
is enclosed
centrally in a
hollow copper
tube of
external
diameter 5 cm
and internal
diameter of 4
cm. The
composite bar
is then
subjected to
an axial pull of
45000 N. If the
length of each
bar is equal to
15 cm , E for
steel = 2.1 X
105 N/mm2
and for copper
is = 1.1 X105
N/mm2 ,the
stress in tube
is 21.88 N/mm² 41.77 N/mm² 31. 88 N/mm² 51.77 N/mm²
Engineering
Mechanics
and Strength
of Materials /
Bending
moments and
shear force 10
A simply
supported
beam of length
L carrying a
concentrated
at the centre of wL wL/ 4 wL/2 wL/8 B
diagram span will have
maximum
bending
moment of
Engineering
Mechanics
and Strength
of Materials /
Bending
moments and
shear force
diagram 11
A beam of
uniform
strength is one
which has
same
Bending
stress at
every section
Deflection
throughout
the beam
Bending
moment
throughout
the beam
Shear force
throughout
the beam C
Engineering
Mechanics
and Strength
of Materials /
Bending
moments and
shear force
diagram 12
A simply
supported
beam a
uniformly
distributed
unit length
over the whole
span (l). The
point of
contraflexure
is at
The suppoted
end
The middle of
the beam
No point of
contraflexture
A distance
(l/4) from the
supported
end C
Engineering
Mechanics
and Strength
of Materials /
Equilibrium of
Forces 13
If a number of
forces are
acting at a
point, their
resultant will
be inclined at
an angle ? with
the horizontal,
such that
tan ? =
?V/?H
tan ? =
?Vx?H
tan ? =
?Hx?V
tan ? =
?H/?V A
Engineering
Mechanics
and Strength
of Materials /
Equilibrium of
Forces 14
If two forces of
magnitude 'P'
act at an angle
'?' there
resultant will
be 2P Cos? P Cos2? P Cos? Sin? 2P Cos?/2 A
Engineering
Mechanics
and Strength
of Materials /
Equilibrium of
Forces 15
Two forces
which when
acting at right
angles
produce
resultant force
of 10 and
when acting at
60° produce
resultant of
v148. These
forces are 3 and 4 6 and 8 5 and 5 4 and 6 B
Engineering
Mechanics
and Strength
of Materials /
Law of
motion,
Friction 16
If the angle of
friction is zero
a body will
experience Infinite friction Zero Friction
The force of
friction will
act normal to
the plane
The force of
friction will
act in the
direction of
motion B
Engineering
Mechanics
and Strength 17
The least force
to drag a body
of 600N along 200v3 N 450 N 300 N 250 N A
of Materials /
Law of
motion,
Friction
a rough
horizontal
plane (angle of
friction=30deg)
is
Engineering
Mechanics
and Strength
of Materials /
Buckling of
columns-
Euler’s and
Rankin’s
theories 18
column having
the tendency
to deflect. On
account of this
tendency, the
Decreases
with the
decrease in
length
Decreases
with the
increase in
length
First
decreases
then
increases
with the
decrease in
length
First
increases
then
decreases
with the
decrease in
length  C
Engineering
Mechanics
and Strength
of Materials /
Buckling of
columns-
Euler’s and
Rankin’s
theories 19
The ratio of
for a column of
length 'l' with
both ends
fixed to the
of the same
column with
both ends
hinged, is
equal to 2 4 0.25 0.5 B
Engineering
Mechanics
and Strength
of Materials /
Buckling of
columns-
Euler’s and
Rankin’s
theories 20
A solid round
circular bar 3
m long and 5
cm in diameter
is used as a
strut with both
ends hinged
having
E=2x105
N/mm2. The
is 67.28 KN 134.56 KN 269.12 KN 16.82 KN

2nd Law of
Thermodynam
ics / Definition
of Sink 21
What is heat
sink in
thermodynami
cs?
Device to
absorb heat
Device to
absorb mass
Device from
which heat is
transferred
Device from
which mass
is transferred B
2nd Law of
Thermodynam
ics / Definition
of Sink 22
proposed a
reversible
cyclein in
1824, in a
Carnot Cycle
the working
medium
at which of the
following?
No
temperature
required
Lower
temperature
Higher
temperature
Constant
temperature A
2nd Law of
Thermodynam
ics / Definition
of Sink 23
A heat engine
works on a
Carnot cycle
with a heat
sink at a
temperature of
27°C. What
would be the
temperature of 30°C 60°C 90°C 100°C  A
the heat at
source if
efficiency of
the engine is
10%?
2nd Law of
Thermodynam
ics / Source
Reservoir of
Heat, Heat
Engine, Heat
pump and
Refrigerator 24
What do you
mean by
antifreeze
chemicals?
Substance
that increases
freezing point
of water
Substance
that lowers
the freezing
point of water
Substance
that will not
effect the
freezing point
of water
Substance
that
evaporates
the water B
2nd Law of
Thermodynam
ics / Source
Reservoir of
Heat, Heat
Engine, Heat
pump and
Refrigerator 25
An Electrolux
refrigerator is
called as
Single-fluid
absorption
system
Three-fluid
absorption
system
Two-fluid
absorption
system
No fluid
absorption
system B
2nd Law of
Thermodynam
ics / Thermal
efficiency of
heat engines
and co-
efficient of
performance
of
Refrigerators 26
Which of the
following
device controls
the flow of
refrigerant in a
refrigeration
cycle? Condenser Compressor Evaporator
Expansion
valve  D
2nd Law of
Thermodynam
ics / Thermal
efficiency of
heat engines
and co-
efficient of
performance
of
Refrigerators 27
Isothermal
efficiency is
defined by
which of the
following in
reciprocating
compressor
Isothermal
work / Actual
indicated work
work /
indicated
work
Isothermal
work /
work
work /
Frictionless
work A
2nd Law of
Thermodynam
ics / Thermal
efficiency of
heat engines
and co-
efficient of
performance
of
Refrigerators 28
What will be
COP of heat
pump if Q1 is
the heat
transfer
between hot
temperature
source
machine and
Q2 between
cold
temperature
source
machine? Q1/Q1-Q2 Q2/Q2-Q1 Q1/Q2-Q1 Q2/Q1-Q2  A
2nd Law of
Thermodynam
ics / Kelvin–
Plank &
Clausius 29
Kelvin Planck’s
law deals with
which of the
following?
Conservation
of energy into
mass
Conservation
of mass into
energy
Conversion of
heat into
work
Conversion of
work into
heat C
2nd Law of 30 Which of the A machine A machine A machine A machine A
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