A disk clutch is required to transmit 5 kW at 2000 rpm. The disk has a friction lining with coefficient of friction equal to 0.25. bore radius of friction lining is equal to 25 mm. assume uniform contact pressure of 1 MPa. The value of outside radius of the friction lining is:

1.  39.4 mm

2.  49.5 mm

3.  97.9 mm

4.  142.9 mm

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4
Correct Answer :

39.4 mm


Explanation :
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Twenty degree full depth involute profiled 19-tooth pinion and 37-tooth gear are in mesh. If the module is 5 mm, the center distance between the gear pair will be

1.  140 mm

2.  150 mm

3.  280 mm

4.  300 mm

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4
Correct Answer :

140 mm


Explanation :
No Explanation available for this question

A cylindrical shaft is subjected to an alternating stress of 100 MPa. Fatigue strength to sustain 1000 cycle is 490 MPa. If the corrected endurance strength is 70 MPa, estimated shaft life will be

1.  1071 cycles

2.  15000 cycles

3.  281914 cycles

4.  928643 cycles

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4
Correct Answer :

281914 cycles


Explanation :
No Explanation available for this question

According to Von-Mises' distortion energy theory, the distortion energy under three dimensional stress state is represented by

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

A steel bar of 40 mm x 40 mm square cross-section is subjected to an axial compressive load of 200 kN. If the length of the bar is 2m and E = 200 GPa, the elongation of the bar will be:

1.  1.25 mm

2.   2.70 mm

3.  4.05 mm

4.  5.40 mm

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4
Correct Answer :

1.25 mm


Explanation :
No Explanation available for this question

If Cf is the coefficient of speed fluctuation of a flywheel then the ratio of

1.  

2.  

3.  

4.  

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4
Correct Answer :


Explanation :
No Explanation available for this question

A bar having a cross-sectional area of 700 mm2 is subjected to axial loads at the positions indicated. The value of stress in the segment QR is:

1.  40 MPa

2.  50 MPa

3.  70 MPa

4.  120 MPa

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4
Correct Answer :

40 MPa


Explanation :
No Explanation available for this question

If a system is in equilibrium and the position of the system depends upon many independent variables, the principle of virtual work states that the partial derivatives of its total potential energy with respect to each of the independent variable must be

1.  -1.0

2.  0

3.  1.0

4.  ∞

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4
Correct Answer :

0


Explanation :
No Explanation available for this question

If point A is in equilibrium under the action of the applied forces, the values of tensions TAB and TAC are respectively.

1.  520 N and 300 N

2.  300 N and 520 N

3.  450 N and 150 N

4.  150 N and 450 N

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4
Correct Answer :

520 N and 300 N


Explanation :
No Explanation available for this question

Match the items in columns I and II Column I Column II (P) Higher kinematic pair (1) Grubler's equation (Q) Lower kinematic pair (2) Line contact (R) Quick return mechanism (3) Euler's equation (S) Mobility of a linkage (4) Planer   (5) Shaper   (6) Surface contact  

1.   P - 2         Q-6   R-4   S-3

2.   P - 6         Q-2   R-4   S-1

3.  P - 6         Q-2   R-5   S-3

4.    P - 2         Q-6   R-5   S-1

View Answer  
4
Correct Answer :

 P - 2         Q-6   R-4   S-3


Explanation :
No Explanation available for this question
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