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ESE ME: Machine Design Champion Quiz 5
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Question 1
In case of a multiple disc clutch, if n1 is the number of discs on the driving shaft and n2 is the number of discs on the driven shaft, then what is the number of pairs of contact surfaces?
Question 2
In a multiple- disc clutch, the axial intensity of uniform pressure is not to exceed 0.2Mpa. The inner radius of the discs is 100mm and is half the outer radius. The axial force per pair of contact surfaces in N is
Question 3
which one of the following expresses the stress factor K used for design closed coiled helical spring?
Question 4
A closely coiled spring of 20 cm mean diameter is having 25 coil of 2 cm diameter. Modulus of rigidity of the material is 107 N/cm2. Stiffness of spring is:
Question 5
A bumper consisting of two helical springs of circular section brings to rest a railway wagon of mass 1500 kg and moving at 1 m/s. While doing so, the springs are compressed by 150 mm. Then, the maximum force on each spring(assuming gradually increasing load) is:
Question 6
Statement (I): Concentric springs are used when outside diameter is limited and higher load carrying capacity is required.
Statement (II): Adjacent spring in concentric springs should be wound with opposite hand helices.
Statement (II): Adjacent spring in concentric springs should be wound with opposite hand helices.
Question 7
Match List-I with List-II and select the correct answer using the code given below the lists:
List-I
A). Unwin’s formula
B). Wahl factor
C). Reynold’s equation
D). Lewis from factor
List-II
1). Bearing
2). Rivets
3). gears
4). Springs
List-I
A). Unwin’s formula
B). Wahl factor
C). Reynold’s equation
D). Lewis from factor
List-II
1). Bearing
2). Rivets
3). gears
4). Springs
Question 8
Consider the following statements:
When two springs of equal length are arranged to from a cluster spring
1). angle of twist in both the springs will equal
2). deflection of both the springs will be equal
3). load taken by each spring will be half the total load
4). Shear stress in each spring will be equal
Which of these statements is/are correct?
When two springs of equal length are arranged to from a cluster spring
1). angle of twist in both the springs will equal
2). deflection of both the springs will be equal
3). load taken by each spring will be half the total load
4). Shear stress in each spring will be equal
Which of these statements is/are correct?
Question 9
Consider the following statements: In case of helical gears, teeth are cut at an angle to the axis of rotation of the gears.
1). Helix angle introduces another ratio called axial contact and of ratio.
2). Transverse contact ratio is equal to axial contact ratio in helical gears.
3). Large transverse contact ratio does not allow multiple teeth to share the load.
4). Large axial contact ratio will cause larger axial force component.
Which of the above statements are correct?
1). Helix angle introduces another ratio called axial contact and of ratio.
2). Transverse contact ratio is equal to axial contact ratio in helical gears.
3). Large transverse contact ratio does not allow multiple teeth to share the load.
4). Large axial contact ratio will cause larger axial force component.
Which of the above statements are correct?
Question 10
Match the type of gears with their most appropriate description.
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Dec 26ESE & GATE ME
