A dummy activity in a net work diagram
In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate
Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles ‘on’ and 2 cycles ‘off’ Power supply is at 50 Hz.
The sensible heat gain is due to the __________ difference between the fresh air and the air in space.
The wet bulb temperature lines, on the psychrometric chart, are curved lines.
In a four stage compressor, if the pressure at the first and third stage are 1 bar and 16 bar, then the delivery pressure at the fourth stage will be
The working pressure and temperature inside the cylinder of an internal combustion engine is __________ as compared to a steam engine.
The frictional power (F.P.) is given by
A carburettor is used to supply
The purpose of governing in steam turbines is to
The critical pressure ratio for gases is
The action of steam in a steam turbine is
A hot metal piece is cooled rapidly to 25°C, removing 1000 kJ from the metal. Calculate the change of entropy if energy is absorbed by vaporizing liquid nitrogen at 101.3 kPa pressure.
In the reversible adiabatic expansion of a gas the increase in disorder due to an increase in volume is compensated by the decrease in disorder due to a decrease in temperature.
Reynolds number is significant in
Fluid is a substance that
Which of the following is a vector quantity?
In actual machines
One watt is equal to
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is
Total number of questions : 20
Number of answered questions : 0
Number of unanswered questions : 20
A dummy activity in a net work diagram
Your Answer : (Not Answered)
Correct Answer : D
No answer description available for this question.
In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate
Your Answer : (Not Answered)
Correct Answer : D
The material removal rate is first increases because of area of jet increase than becomes stable and then decreases due to decrease in jet velocity.
Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles ‘on’ and 2 cycles ‘off’ Power supply is at 50 Hz.
Your Answer : (Not Answered)
Correct Answer : B
Weld per min = (frequency × 60)/ (cycles for weld + interval cycles)
= (50 × 60)/ (3 + 2) = 600 welds/ min.
Work speed (mm / min) = (welds/ min) / weld required per mm
= 600 / (4/10) = 1500 mm/min.
The sensible heat gain is due to the __________ difference between the fresh air and the air in space.
Your Answer : (Not Answered)
Correct Answer : A
No answer description available for this question.
The wet bulb temperature lines, on the psychrometric chart, are curved lines.
Your Answer : (Not Answered)
Correct Answer : B
No answer description available for this question.
In a four stage compressor, if the pressure at the first and third stage are 1 bar and 16 bar, then the delivery pressure at the fourth stage will be
Your Answer : (Not Answered)
Correct Answer : B
No answer description available for this question.
The working pressure and temperature inside the cylinder of an internal combustion engine is __________ as compared to a steam engine.
Your Answer : (Not Answered)
Correct Answer : D
No answer description available for this question.
The frictional power (F.P.) is given by
Your Answer : (Not Answered)
Correct Answer : B
No answer description available for this question.
A carburettor is used to supply
Your Answer : (Not Answered)
Correct Answer : D
No answer description available for this question.
The purpose of governing in steam turbines is to
Your Answer : (Not Answered)
Correct Answer : A
No answer description available for this question.
The critical pressure ratio for gases is
Your Answer : (Not Answered)
Correct Answer : A
No answer description available for this question.
The action of steam in a steam turbine is
Your Answer : (Not Answered)
Correct Answer : B
No answer description available for this question.
A hot metal piece is cooled rapidly to 25°C, removing 1000 kJ from the metal. Calculate the change of entropy if energy is absorbed by vaporizing liquid nitrogen at 101.3 kPa pressure.
Your Answer : (Not Answered)
Correct Answer : D
Nitrogen boiling at 101.3 kPa; m = 1Q2 /h(fg) = 1000/198.842 = 5.029 kg
∆S(N2) = ms(fg) = 5.029(2.5708) = 12.929 kJ/K.
In the reversible adiabatic expansion of a gas the increase in disorder due to an increase in volume is compensated by the decrease in disorder due to a decrease in temperature.
Your Answer : (Not Answered)
Correct Answer : A
This ensures that the disorder number or entropy remains constant.
Reynolds number is significant in
Your Answer : (Not Answered)
Correct Answer : B
No answer description available for this question.
Fluid is a substance that
Your Answer : (Not Answered)
Correct Answer : D
No answer description available for this question.
Which of the following is a vector quantity?
Your Answer : (Not Answered)
Correct Answer : C
No answer description available for this question.
In actual machines
Your Answer : (Not Answered)
Correct Answer : C
No answer description available for this question.
One watt is equal to
Your Answer : (Not Answered)
Correct Answer : B
No answer description available for this question.
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is
Your Answer : (Not Answered)
Correct Answer : A
No answer description available for this question.
Total number of questions : 20
Number of answered questions : 0
Number of unanswered questions : 20
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