Mechanical Engineering
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Ponraman N
asked a question
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Which is not true in respect of mechanical working of metals?- a)manifests in the shaping of metals by some mechanical means
- b)can be worked either in cold or hot state
- c)does not include the shaping of metals by casting, machining and grinding etc.
- d)adversely affects the mechanical properties of metals
Correct answer is option 'D'. Can you explain this answer?
Which is not true in respect of mechanical working of metals?
a)
manifests in the shaping of metals by some mechanical means
b)
can be worked either in cold or hot state
c)
does not include the shaping of metals by casting, machining and grinding etc.
d)
adversely affects the mechanical properties of metals
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DUSHYNTA SHARMA
asked a question
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Consider the following ingredients used in moulding:1. Dry silica sand2. Clay3. Phenol formaldehyde4. Sodium silicate Those used for shell mould casting include- a) 1, 2 and 4
- b) 2, 3 and 4
- c) 1 and 3
- d) 1, 2, 3 and 4
Correct answer is option 'C'. Can you explain this answer?
Consider the following ingredients used in moulding:
1. Dry silica sand
2. Clay
3. Phenol formaldehyde
4. Sodium silicate Those used for shell mould casting include
a)
1, 2 and 4
b)
2, 3 and 4
c)
1 and 3
d)
1, 2, 3 and 4
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Abhishek Govil
asked a question
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Match List-I (Type of boiler) with List-II (Features) select the correct answer using the
codes given below the lists:
List-I
a. Benson
b. Stirling
c. Babcock-Wilcox
d. Cochran
List-II
1. Vertical fire tube
2. Horizontal fire tube
3. Bent water tube
4. Once through flow
5. Inclined water tube
- a)a
- b)b
- c)c
- d)d
Correct answer is option 'C'. Can you explain this answer?
Match List-I (Type of boiler) with List-II (Features) select the correct answer using the
codes given below the lists:
List-I
a. Benson
b. Stirling
c. Babcock-Wilcox
d. Cochran
List-II
1. Vertical fire tube
2. Horizontal fire tube
3. Bent water tube
4. Once through flow
5. Inclined water tube
codes given below the lists:
List-I
a. Benson
b. Stirling
c. Babcock-Wilcox
d. Cochran
List-II
1. Vertical fire tube
2. Horizontal fire tube
3. Bent water tube
4. Once through flow
5. Inclined water tube
a)
a
b)
b
c)
c
d)
d
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Nirmal Mallick
asked a question
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Select the Kelvin-Plank statement of the second law:- a)an engine cannot produce more heat that the heat it receives.
- b)a refrigerator cannot transfer heat from a low-temperature reservoir to a high temperature reservoir without work.
- c)an engine cannot produce work without discharging heat.
- d)an engine discharges heat if the work is less than the heat it receives.
Correct answer is option 'C'. Can you explain this answer?
Select the Kelvin-Plank statement of the second law:
a)
an engine cannot produce more heat that the heat it receives.
b)
a refrigerator cannot transfer heat from a low-temperature reservoir to a high temperature reservoir without work.
c)
an engine cannot produce work without discharging heat.
d)
an engine discharges heat if the work is less than the heat it receives.
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Samuel Santhosh Kumar
asked a question
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According to the manufacturing-based definition of quality,- a)quality is the degree of excellence at an acceptable price and the control of variability at an acceptable cost.
- b)quality depends on how well the product fits patterns of consumer preferences.
- c)enve though quality cannot be defined, you know what it is.
- d)quality is the degree to which a specific product conforms to standards.
Correct answer is option 'D'. Can you explain this answer?
According to the manufacturing-based definition of quality,
a)
quality is the degree of excellence at an acceptable price and the control of variability at an acceptable cost.
b)
quality depends on how well the product fits patterns of consumer preferences.
c)
enve though quality cannot be defined, you know what it is.
d)
quality is the degree to which a specific product conforms to standards.
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Akshay Kumar
asked a question
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Common Data Questions (32 and 33):
A smooth flat plate with a sharp leading edge is placed along a gas free stream flowing at U = 10 m/s. The thickness of the boundary layer at section r-s is 10 mm, the breadth of the plate is 1 m (into the paper) and the density of the gas, p = 1.0 kg/m3 . Assume that the boundary layer is thin, two - dimensional, and follows a linear velocity distribution, u = U (y/δ), at the section r-s, where y is the height from plate.
Q. The mass flow rate in Kg/s accros the section q-r is... more
Common Data Questions (32 and 33):
A smooth flat plate with a sharp leading edge is placed along a gas free stream flowing at U = 10 m/s. The thickness of the boundary layer at section r-s is 10 mm, the breadth of the plate is 1 m (into the paper) and the density of the gas, p = 1.0 kg/m3 . Assume that the boundary layer is thin, two - dimensional, and follows a linear velocity distribution, u = U (y/δ), at the section r-s, where y is the height from plate.
A smooth flat plate with a sharp leading edge is placed along a gas free stream flowing at U = 10 m/s. The thickness of the boundary layer at section r-s is 10 mm, the breadth of the plate is 1 m (into the paper) and the density of the gas, p = 1.0 kg/m3 . Assume that the boundary layer is thin, two - dimensional, and follows a linear velocity distribution, u = U (y/δ), at the section r-s, where y is the height from plate.
Q. The mass flow rate in Kg/s accros the section q-r is
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Mahesh Kumar
asked a question
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A gas turbine cycle with heat exchange and reheating improves- a)Only the thermal efficiency
- b)Only the specific power output
- c)Both thermal efficiency and specific power
- d)Neither thermal efficiency nor specific power output
Correct answer is option 'C'. Can you explain this answer?
A gas turbine cycle with heat exchange and reheating improves
a)
Only the thermal efficiency
b)
Only the specific power output
c)
Both thermal efficiency and specific power
d)
Neither thermal efficiency nor specific power output
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Aadarsh Vikram
asked a question
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Consider the following statementsThe critical speed of a shaft if affected by the
1. eccentricity of the shaft
2. span of the shaft
3. diameter of the shaftOf these statements:- a)1 and 2 are correct
- b)1 and 3 are correct
- c)2 and 3 are correct
- d)1, 2 and 3 are correct.
Correct answer is option 'C'. Can you explain this answer?
Consider the following statements
The critical speed of a shaft if affected by the
1. eccentricity of the shaft
2. span of the shaft
3. diameter of the shaft
1. eccentricity of the shaft
2. span of the shaft
3. diameter of the shaft
Of these statements:
a)
1 and 2 are correct
b)
1 and 3 are correct
c)
2 and 3 are correct
d)
1, 2 and 3 are correct.
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Shivam Pandey
asked a question
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Match List-I with List-lI and select the correct answer using the codes given below the lists:
List-I
A. Pantograph
B. Single slider crank chain
C. Double slider crank chain
D. Straight line motion
List-II
1. Scotch yoke mechanism
2. Double lever mechanism
3. Tchebicheff mechanism
4. Double crank mechanism
5. Hand pump
Codes:
A B C D
(a) 4 3 5 1
(b) 2 5 1 3
(c) 2 1 5 3
(d) 4 5 2 1- a)(a)
- b)(b)
- c)(c)
- d)(d)
Correct answer is option 'B'. Can you explain this answer?
Match List-I with List-lI and select the correct answer using the codes given below the lists:
List-I
A. Pantograph
B. Single slider crank chain
C. Double slider crank chain
D. Straight line motion
List-II
1. Scotch yoke mechanism
2. Double lever mechanism
3. Tchebicheff mechanism
4. Double crank mechanism
5. Hand pump
Codes:
A B C D
(a) 4 3 5 1
(b) 2 5 1 3
(c) 2 1 5 3
(d) 4 5 2 1
List-I
A. Pantograph
B. Single slider crank chain
C. Double slider crank chain
D. Straight line motion
List-II
1. Scotch yoke mechanism
2. Double lever mechanism
3. Tchebicheff mechanism
4. Double crank mechanism
5. Hand pump
Codes:
A B C D
(a) 4 3 5 1
(b) 2 5 1 3
(c) 2 1 5 3
(d) 4 5 2 1
a)
(a)
b)
(b)
c)
(c)
d)
(d)
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Abhishek Govil
asked a question
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The object of producing draught in a boiler is- a)to provide an adequate supply of air for the fuel combustion
- b)to exhaust the gases of combustion from the combustion chamber
- c)to discharge the gases of combustion to the atmosphere through the chimney
- d)all of the above
Correct answer is option 'D'. Can you explain this answer?
The object of producing draught in a boiler is
a)
to provide an adequate supply of air for the fuel combustion
b)
to exhaust the gases of combustion from the combustion chamber
c)
to discharge the gases of combustion to the atmosphere through the chimney
d)
all of the above
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Abhimanyu Gadhavi
asked a question
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The length of the links of a 4-bar linkage with revolute pairs only are p, q, r and s units. Given that p < q < r< s. Which of these iinks should be the fixed one, for obtaining a ‘double crank’ mechanism?- a)Links of length p
- b)Links of length q
- c)Link of length r
- d)Link of length s
Correct answer is option 'A'. Can you explain this answer?
The length of the links of a 4-bar linkage with revolute pairs only are p, q, r and s units. Given that p < q < r< s. Which of these iinks should be the fixed one, for obtaining a ‘double crank’ mechanism?
a)
Links of length p
b)
Links of length q
c)
Link of length r
d)
Link of length s
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Shraddhaa Badone
asked a question
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Water in an insulative evaporative cooler evaporates at the rate of 0.003 kg/s. Air flow rate is 1 kg/s. What is the air temperature decrease if the specific heat of humid air is 1 kJ/kg K and latent heat of water is 2500 kJ/kg?- a)2.5°C
- b)3.0°C
- c)7.5°C
- d)10°C
Correct answer is option 'C'. Can you explain this answer?
Water in an insulative evaporative cooler evaporates at the rate of 0.003 kg/s. Air flow rate is 1 kg/s. What is the air temperature decrease if the specific heat of humid air is 1 kJ/kg K and latent heat of water is 2500 kJ/kg?
a)
2.5°C
b)
3.0°C
c)
7.5°C
d)
10°C
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Samuel Santhosh Kumar
asked a question
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The entropy change for any closed system which undergoes an irreversible adiabatic process- a)may be positive, negative or zero
- b)may be positive or zero but not negative
- c)is always positive
- d)is always negative
Correct answer is option 'C'. Can you explain this answer?
The entropy change for any closed system which undergoes an irreversible adiabatic process
a)
may be positive, negative or zero
b)
may be positive or zero but not negative
c)
is always positive
d)
is always negative
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Abhishek Raj
asked a question
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Choose the correct statement among the following:- a)temperature is an extensive property
- b)mass remains same in an open system
- c)the system boundaries are collapsible and expandable
- d)an isolated system allows exchange of energy in the form of heat only
Correct answer is option 'C'. Can you explain this answer?
Choose the correct statement among the following:
a)
temperature is an extensive property
b)
mass remains same in an open system
c)
the system boundaries are collapsible and expandable
d)
an isolated system allows exchange of energy in the form of heat only
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N P
asked a question
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A double fillet welded joint with parallel fillet weld of length L and leg B is subjected to a tensile force P. Assuming uniform stress distribution, the shear stress in the weld is given by - a)√2P/B.L
- b)P/2B.L
- c)P/√2B.L
- d)2P/B.L
Correct answer is option 'C'. Can you explain this answer?
A double fillet welded joint with parallel fillet weld of length L and leg B is subjected to a tensile force P. Assuming uniform stress distribution, the shear stress in the weld is given by
a)
√2P/B.L
b)
P/2B.L
c)
P/√2B.L
d)
2P/B.L
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Daniyal Zahid
asked a question
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A round rod of annealed bras 70-30 is being drawn from a diameter of 8 mm to a diameter of 4 mm at a speed of 0.8 m/s. (k = 895 MPa, n = 0.49)Q. The drawing force required in this operation is- a) 0.0024 MN
- b) 0.0029 MN
- c) 0.0036 MN
- d) 0.0043 MN
Correct answer is option 'D'. Can you explain this answer?
A round rod of annealed bras 70-30 is being drawn from a diameter of 8 mm to a diameter of 4 mm at a speed of 0.8 m/s. (k = 895 MPa, n = 0.49)
Q. The drawing force required in this operation is
a)
0.0024 MN
b)
0.0029 MN
c)
0.0036 MN
d)
0.0043 MN
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Abhishek Aute Aute
asked a question
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In an axial flow impulse turbine, energy transfer takes place due to - a)Change in relative kinetic energy
- b)Change in absolute kinetic energy
- c)Change in pressure energy
- d)Change in energy because of centrifugal force
Correct answer is option 'B'. Can you explain this answer?
In an axial flow impulse turbine, energy transfer takes place due to
a)
Change in relative kinetic energy
b)
Change in absolute kinetic energy
c)
Change in pressure energy
d)
Change in energy because of centrifugal force
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Vamsi Reddy
asked a question
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Assertion (A): To obtain large deformations by cold working intermediate annealing is not required.
Reason (R): Cold working is perfol1ned below the recrystallisation temperature of the work material. - a)Both A and R are true and R is the correct explanation of A
- b)Both A and R arc true but R is NOT the correct explanation of A
- c)A is true hut R is false
- d)A is false but R is true
Correct answer is option 'D'. Can you explain this answer?
Assertion (A): To obtain large deformations by cold working intermediate annealing is not required.
Reason (R): Cold working is perfol1ned below the recrystallisation temperature of the work material.
Reason (R): Cold working is perfol1ned below the recrystallisation temperature of the work material.
a)
Both A and R are true and R is the correct explanation of A
b)
Both A and R arc true but R is NOT the correct explanation of A
c)
A is true hut R is false
d)
A is false but R is true
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Saroj Bagh
asked a question
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Pseudo- plastic substances are non- Newtonian fluids for which- a)Dynamic viscosity decreases with the time for which shearing force applied.
- b)Dynamic viscosity increases with time for which shearing force applied.
- c)Dynamic viscosity decreases as the rate of shear increases
- d)Dynamic viscosity increases as the rate of shear increases.
Correct answer is option 'C'. Can you explain this answer?
Pseudo- plastic substances are non- Newtonian fluids for which
a)
Dynamic viscosity decreases with the time for which shearing force applied.
b)
Dynamic viscosity increases with time for which shearing force applied.
c)
Dynamic viscosity decreases as the rate of shear increases
d)
Dynamic viscosity increases as the rate of shear increases.
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Sundar Raj
asked a question
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Common Data for Questions
Radiative heat transfer is intended between the inner surfaces of two very large isothermal parallel metal plates. While the upper plate (designated as plate 1) is a black surface and is the warmer one being maintained at 727°C, the lower plate (plate 2) is a diffuse and gray surface with an emissivity of 0.7 and is kept at 227°C.
Assume that the surfaces are sufficiently large to form a two-surface enclosure and steady-state conditions to exist. Stefan-Boltzmann constant is given as 5.67 × 10-8 W/m2K4.Q. If plate 1 is also a diffuse and gray surface with an emissivity value of 0.8, the net radiation heat exchange (in kW/m2) between plate 1 and plate 2 is: ... more
Common Data for Questions
Radiative heat transfer is intended between the inner surfaces of two very large isothermal parallel metal plates. While the upper plate (designated as plate 1) is a black surface and is the warmer one being maintained at 727°C, the lower plate (plate 2) is a diffuse and gray surface with an emissivity of 0.7 and is kept at 227°C.
Assume that the surfaces are sufficiently large to form a two-surface enclosure and steady-state conditions to exist. Stefan-Boltzmann constant is given as 5.67 × 10-8 W/m2K4.
Radiative heat transfer is intended between the inner surfaces of two very large isothermal parallel metal plates. While the upper plate (designated as plate 1) is a black surface and is the warmer one being maintained at 727°C, the lower plate (plate 2) is a diffuse and gray surface with an emissivity of 0.7 and is kept at 227°C.
Assume that the surfaces are sufficiently large to form a two-surface enclosure and steady-state conditions to exist. Stefan-Boltzmann constant is given as 5.67 × 10-8 W/m2K4.
Q. If plate 1 is also a diffuse and gray surface with an emissivity value of 0.8, the net radiation heat exchange (in kW/m2) between plate 1 and plate 2 is:
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Tejendra Jangid
asked a question
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The slenderness ratio is the ratio of- a)area of column to least radius of gyration
- b)length of column to least radius of gyration
- c)least radius of gyration to area of column
- d)least radius of gyration to length of column
Correct answer is option 'B'. Can you explain this answer?
The slenderness ratio is the ratio of
a)
area of column to least radius of gyration
b)
length of column to least radius of gyration
c)
least radius of gyration to area of column
d)
least radius of gyration to length of column
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محمد القدومي
asked a question
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Efficient operation of catalytic converters require maintenance of
1. temperature
2. equivalence ratio
3. pressure
4. direction of exhaust flow
Q. Select the correct statements from above:- a)1 and 2
- b)1, 2 and 3
- c)2, 3 and 4
- d)1 and 4
Correct answer is option 'A'. Can you explain this answer?
Efficient operation of catalytic converters require maintenance of
1. temperature
2. equivalence ratio
3. pressure
4. direction of exhaust flow
Q. Select the correct statements from above:
1. temperature
2. equivalence ratio
3. pressure
4. direction of exhaust flow
Q. Select the correct statements from above:
a)
1 and 2
b)
1, 2 and 3
c)
2, 3 and 4
d)
1 and 4
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Yangthrili Sangtam
asked a question
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Consider the following statements pertaining to gas turbines:1. The degree of reaction of a reaction turbine is the ratio of energytransfer in fixed blade to the overall energy transfer across a stage.2. The overall pressure drop in a turbine is the product of pressure dropper stage and number of stages.3. Gas turbine cycle (Brayton cycle) is not as efficient as Rankine cycle forsteam.Which of the above statements is/are correct? - a)1 only
- b)2 only
- c)2 and 3
- d)3 only
Correct answer is option 'D'. Can you explain this answer?
Consider the following statements pertaining to gas turbines:
1. The degree of reaction of a reaction turbine is the ratio of energytransfer in fixed blade to the overall energy transfer across a stage.
2. The overall pressure drop in a turbine is the product of pressure dropper stage and number of stages.
3. Gas turbine cycle (Brayton cycle) is not as efficient as Rankine cycle forsteam.
Which of the above statements is/are correct?
a)
1 only
b)
2 only
c)
2 and 3
d)
3 only
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Niranjan Pardeshi
asked a question
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While pouring molten metal in the mould of the molten metal does not appear in the riser. It indicates- a)a sound casting will be produced
- b)an obstruction between sprue and riser
- c)insufficient molten metal to fill the cavity
- d)either insufficient molten metal to fill the cavity or an obstruction between sprue and riser
Correct answer is option 'A'. Can you explain this answer?
While pouring molten metal in the mould of the molten metal does not appear in the riser. It indicates
a)
a sound casting will be produced
b)
an obstruction between sprue and riser
c)
insufficient molten metal to fill the cavity
d)
either insufficient molten metal to fill the cavity or an obstruction between sprue and riser
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Charming Sanju
asked a question
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The difference in ordinate of the shear curve between any two sections is equal to the area under- a) load curve between these two section
- b) shear curve between these two sections
- c) bending moment curve between these two section
- d) load curve between these two sections plus concentrated loads applied between the sections
Correct answer is option 'D'. Can you explain this answer?
The difference in ordinate of the shear curve between any two sections is equal to the area under
a)
load curve between these two section
b)
shear curve between these two sections
c)
bending moment curve between these two section
d)
load curve between these two sections plus concentrated loads applied between the sections
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SAHIL KUNDRA
asked a question
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Air at 100 KPa and 280 KPa is compressed steadily to 600 KPa and 400 KPa. The mass flow rate of air is 0.02 Kg/s and a heat loss of 16 kJ/Kg occurs during the process. The power input to compressor will be_____kW
Correct answer is between '-2.730,-2.372'. Can you explain this answer?
Air at 100 KPa and 280 KPa is compressed steadily to 600 KPa and 400 KPa. The mass flow rate of air is 0.02 Kg/s and a heat loss of 16 kJ/Kg occurs during the process. The power input to compressor will be_____kW
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Navdeep Rajpoot Rajpoot
asked a question
|
Match the List-I (Equipment) with List-II (Functions):
List-I
A. Hot chamber machine
B. Muller
C. Dielectric baker
D. Sand blasting
List-II
1. Cleaning
2. Core making
3. Die casting
4. Annealing
5. Mixing
Codes:
A B C D
(a) 3 5 2 1
(b) 4 2 5 3
(c) 4 2 3 1
(d) 3 5 1 2- a)(a)
- b)(b)
- c)(c)
- d)(d)
Correct answer is option 'A'. Can you explain this answer?
Match the List-I (Equipment) with List-II (Functions):
List-I
A. Hot chamber machine
B. Muller
C. Dielectric baker
D. Sand blasting
List-II
1. Cleaning
2. Core making
3. Die casting
4. Annealing
5. Mixing
Codes:
A B C D
(a) 3 5 2 1
(b) 4 2 5 3
(c) 4 2 3 1
(d) 3 5 1 2
List-I
A. Hot chamber machine
B. Muller
C. Dielectric baker
D. Sand blasting
List-II
1. Cleaning
2. Core making
3. Die casting
4. Annealing
5. Mixing
Codes:
A B C D
(a) 3 5 2 1
(b) 4 2 5 3
(c) 4 2 3 1
(d) 3 5 1 2
a)
(a)
b)
(b)
c)
(c)
d)
(d)
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Hemant Bhagat
asked a question
|
Arrange the following materials in order of their increasing die life :- a)brass, cast iron, zinc and aluminium
- b)brass, cast iron, aluminium and zinc
- c)cast iron, brass, aluminium and zink
- d)cast iron, brass, zinc and aluminium
Correct answer is option 'C'. Can you explain this answer?
Arrange the following materials in order of their increasing die life :
a)
brass, cast iron, zinc and aluminium
b)
brass, cast iron, aluminium and zinc
c)
cast iron, brass, aluminium and zink
d)
cast iron, brass, zinc and aluminium
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Bhushana Rao Kona
asked a question
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The loss of kinetic energy during inelastic impact, is given by(where m1 = Mass of the first body,m2 = Mass of the second body, and u1 and u2 = Velocities of the first and second bodies respectively.)- a)
- b)
- c)
- d)
Correct answer is option 'A'. Can you explain this answer?
The loss of kinetic energy during inelastic impact, is given by(where m1 = Mass of the first body,m2 = Mass of the second body, and u1 and u2 = Velocities of the first and second bodies respectively.)
a)
b)
c)
d)
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Mahesh Kumar
asked a question
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slack side in a flat belt drive is- a)proportional to the product of coefficient of friction and lap angle
- b)an exponential function of the product of coefficient of friction and lap angle
- c)proportional to lap angle
- d)proportional to the coefficient of friction
Correct answer is option 'B'. Can you explain this answer?
slack side in a flat belt drive is
a)
proportional to the product of coefficient of friction and lap angle
b)
an exponential function of the product of coefficient of friction and lap angle
c)
proportional to lap angle
d)
proportional to the coefficient of friction
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Abhishek Govil
asked a question
|
Match List - I withList -II and select the correct
answer using the codes given below the lists:
List-I
a. Stream line
b. Streak line
c. Path line
d. Equipotential lines
List-II
1. Tracing of motion of any fluid particle
2. Tracing of motion of different fluid particles
3. Identification of location of number of fluid
particles
4. Orthogonal to streak lines
5. Location of equal piezometric head
- a)a
- b)b
- c)c
- d)d
Correct answer is option 'D'. Can you explain this answer?
Match List - I withList -II and select the correct
answer using the codes given below the lists:
List-I
a. Stream line
b. Streak line
c. Path line
d. Equipotential lines
List-II
1. Tracing of motion of any fluid particle
2. Tracing of motion of different fluid particles
3. Identification of location of number of fluid
particles
4. Orthogonal to streak lines
5. Location of equal piezometric head
answer using the codes given below the lists:
List-I
a. Stream line
b. Streak line
c. Path line
d. Equipotential lines
List-II
1. Tracing of motion of any fluid particle
2. Tracing of motion of different fluid particles
3. Identification of location of number of fluid
particles
4. Orthogonal to streak lines
5. Location of equal piezometric head
a)
a
b)
b
c)
c
d)
d
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E Cube
asked a question
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Consider the following statements:1. Thermodynamic properties are the macroscopic coordinates significant only for systems existing in states o thermodynamic equilibrium.2. Engineering thermodynamic studies about storage, transfer and transformation of energy3. Engineering thermodynamics studies storage, transfer and transformation of energy.Which of the above is/are correct?- a)3 only
- b)1 and 3
- c)2 only
- d)1 and 2
Correct answer is option 'B'. Can you explain this answer?
Consider the following statements:
1. Thermodynamic properties are the macroscopic coordinates significant only for systems existing in states o thermodynamic equilibrium.
2. Engineering thermodynamic studies about storage, transfer and transformation of energy
3. Engineering thermodynamics studies storage, transfer and transformation of energy.
Which of the above is/are correct?
a)
3 only
b)
1 and 3
c)
2 only
d)
1 and 2
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Abhishek Mahawar
asked a question
|
A conventional lathe and a CNC lathe are under consideration for machining a given part. The relevant data are shown below:
The machine preferred for producing 100 pieces is[ME 2000]- a)conventional lathe
- b)CNC lathe
- c)any of the above
- d)None of these
Correct answer is option 'B'. Can you explain this answer?
A conventional lathe and a CNC lathe are under consideration for machining a given part. The relevant data are shown below:
The machine preferred for producing 100 pieces is
The machine preferred for producing 100 pieces is
[ME 2000]
a)
conventional lathe
b)
CNC lathe
c)
any of the above
d)
None of these
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Deep Bakshi
asked a question
|
In a boundary layer developed along the flow, the pressure decreases along the downstream direction. The boundary layer thickness would- a)tend to decrease along the flow
- b)remains constant
- c)increase rapidly along the flow
- d)increase gradually along the flow
Correct answer is option 'D'. Can you explain this answer?
In a boundary layer developed along the flow, the pressure decreases along the downstream direction. The boundary layer thickness would
a)
tend to decrease along the flow
b)
remains constant
c)
increase rapidly along the flow
d)
increase gradually along the flow
|
Pooja Shende
asked a question
|
Which of the following statement is incorrect?- a)The greater the pressure difference in throttling the lesser the irreversibility
- b)The primary source of internal irreversibility in power is fluid friction in rotary machines.
- c)The greater the irreversibility, the greater the increase in adiabatic process
- d)The entropy of the universe is continually on the increase.
Correct answer is option 'A'. Can you explain this answer?
Which of the following statement is incorrect?
a)
The greater the pressure difference in throttling the lesser the irreversibility
b)
The primary source of internal irreversibility in power is fluid friction in rotary machines.
c)
The greater the irreversibility, the greater the increase in adiabatic process
d)
The entropy of the universe is continually on the increase.
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Gopi Vallabhaneni
asked a question
|
Hot press forging- a)Causes a steadily applied pressure instead of impact force
- b)Is used to force the end of a heated bar into a desired shape
- c)Is a forging operation in which two halves of a rotating die open and closed rapidly while impacting the end of the heated tube shell
- d)None
Correct answer is option 'A'. Can you explain this answer?
Hot press forging
a)
Causes a steadily applied pressure instead of impact force
b)
Is used to force the end of a heated bar into a desired shape
c)
Is a forging operation in which two halves of a rotating die open and closed rapidly while impacting the end of the heated tube shell
d)
None
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