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ESE ME 2018 Exam: Practice Quiz 4
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Question 1
What is the ratio of displacement thickness to boundary layer thickness for a linear distribution of velocity 
in the boundary layer on a flat plate, where δ is the boundary layer thickness and u∞ is the free steam velocity?
in the boundary layer on a flat plate, where δ is the boundary layer thickness and u∞ is the free steam velocity? Question 2
A conduction heat flux of 25 kW/m2 passes through a steel plate having thermal conductivity of 50 W/mK and thickness of 10 cm . If the temperature of the hot surface of the plate is 1000 C, then what is the temperature of the cooler side of the plate?
Question 3
High energy rate forming process used for forming components from thin metal sheets or deform thin tubes is
Question 4
Consider the following statements:
1). The amount of interference needed to create a tight joints varies with diameter of the shaft.
2). An interference fit creates no stress state in the shaft.
3). The stress state in the hub is similar to a thick-walled cylinder with internal pressure.
Which of the following statements are correct?
1). The amount of interference needed to create a tight joints varies with diameter of the shaft.
2). An interference fit creates no stress state in the shaft.
3). The stress state in the hub is similar to a thick-walled cylinder with internal pressure.
Which of the following statements are correct?
Question 5
Consider the following statements:
1) Both Otto and Diesel cycles are special cases of dual combustion cycle
2) Combustion process in IC engines is neither fully constant volume nor fully constant pressure process
3) Combustion process in ideal cycle is replaced by heat addition from internal source in closed cycle
4) Exhaust process is replaced by heat rejection in ideal cycle
Which of the above statements are correct?
1) Both Otto and Diesel cycles are special cases of dual combustion cycle
2) Combustion process in IC engines is neither fully constant volume nor fully constant pressure process
3) Combustion process in ideal cycle is replaced by heat addition from internal source in closed cycle
4) Exhaust process is replaced by heat rejection in ideal cycle
Which of the above statements are correct?
Question 6
consider the following statements:
Transmissibility of vibrations:
1) Is more than, 1, when
.
2) Is less than 1, when
.
3) Increases as the damping is increased
Which of the above statements is/are correct?
Transmissibility of vibrations:
1) Is more than, 1, when
. 2) Is less than 1, when
. 3) Increases as the damping is increased
Which of the above statements is/are correct?
Question 7
In the inventory control, if the yearly demand for a certain material is fixed, the economic order quantity gives minimum
Question 8
Match List-I with List-II and select the correct answer using the code give below the lists:
List-I
[A]. Nickel
[B]. Chromium
[C]. Tungsten
[D]. Vanadium
List-II
[1]. Increase tensile strength in medium carbon steels
[2]. Imparts hot hardness to steel
[3]. Imparts hardness with high strength
[4]. Increases toughness of steel
List-I
[A]. Nickel
[B]. Chromium
[C]. Tungsten
[D]. Vanadium
List-II
[1]. Increase tensile strength in medium carbon steels
[2]. Imparts hot hardness to steel
[3]. Imparts hardness with high strength
[4]. Increases toughness of steel
Question 9
A ball of weight 100 N is tied to a smooth wall by a cord making an angle of 30 ° to the wall.
The tension is the cord is :
The tension is the cord is :
Question 10
Consider the following
1). Increased cetane number.
2). Increased compression ratio.
3). Increased injection advance.
4). Engine speed.
Which of the above factors reduce physical delay in the diesel engine?
1). Increased cetane number.
2). Increased compression ratio.
3). Increased injection advance.
4). Engine speed.
Which of the above factors reduce physical delay in the diesel engine?
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