An epicyclic gear train is shown schematically in the adjacent figureThe sun gear 2 on the input shaft is a 20 teeth external gear. The planet gear 3 is a 40 teeth external gear. The ring gear 5 is a 100 teeth internal gear. The ringgear 5 is  fixed and the gear 2  is rotating  at  50 rpm ccw (ccw=counter-clockwise and cw=clockwise) The arm 4 attached to the output shaft will rotate at

1.  10 rpm ccw

2.  10 rpm cw

3.  12 rpm cw

4.   12 rpm ccw

View Answer  
4
Correct Answer :

10 rpm cw


Explanation :
No Explanation available for this question

A  forged steel link  with uniform  diameter  of 30mm  at the  centre  is subjected to an  axial  force  that  varies  from  40kN  in  compression  to  160kN  in  tension.  The tensile  (Su)yield  (Sy) and  corrected  endurance  (Se )  strengths  of  the  steel material  are  600MPa,  420MPa  and  240MPa  respectively.  The factor of safety against fatigue endurance as per Soderberg’s criterion is

1.  1.26

2.  1.37

3.  1.45

4.  2.00

View Answer  
4
Correct Answer :

1.26


Explanation :
No Explanation available for this question

An  automotive  engine  weighing  240kg  is  supported  on  four  springs  with  linear characteristics.  Each  of the  front  two  springs  have  a  stiffness  of 16MN/m  while the stiffness of each rear spring is 32MN/m. The engine speed (in rpm), at which resonance is likely to occur, is

1.   6040

2.  3020

3.  1424

4.  955

View Answer  
4
Correct Answer :

 6040


Explanation :
No Explanation available for this question

A  vehicle  suspension  system consists  of  a spring  and  a damper.  The stiffness of  the spring  is  3.6kN/m  and the  damping  constant  of the damper  is  400Ns/m. Ifthe  mass  is  50kg,  then  the  damping  factor  (d)  and  damped  natural  frequency (Fn) respectively are

1.  0.471 and 1.19Hz

2.  0.471 and 7.48Hz

3.  0.666 and 1.35Hz

4.  0.666 and 8.50Hz

View Answer  
4
Correct Answer :

0.471 and 1.19Hz


Explanation :
No Explanation available for this question

A  frame  of  two  arms  of  equal  length  L  is  shown  in  the  adjacent  figure.  The flexural rigidity of each arm of the frame is EI. The vertical deflection at the pointof application of load P is

1.  PL3/3EI

2.  2 PL3/3EI

3.   PL3/EI

4.  4PL3/3EI

View Answer  
4
Correct Answer :

4PL3/3EI


Explanation :
No Explanation available for this question

A uniform rigid rod of  mass M and length L is hinged  at one end as shown in the adjacent  figure. A  force P is applied  at  a distance  of 2L/3 from the hinge so that the rod swings to the right. The reaction at the hinge is

1.  –p

2.  0

3.  p/3

4.  2p/3

View Answer  
4
Correct Answer :

p/3


Explanation :
No Explanation available for this question

A company uses 2555 units of an item annually. Delivery lead time is 8 days. The recorder point (in number of units) to achieve optimum inventory is

1.  7

2.   8

3.  56

4.  60

View Answer  
4
Correct Answer :

8


Explanation :
No Explanation available for this question

Consider the following Linear Programming Problem (LPP) Maximize     z = 3x1+2x2 Subject to         x1         ≤ 4                        X2       ≤ 6                      3x1+2x2   ≤ 18                      x1 ≥ 0,  x2 ≥ 0ns

1.  The LPP has a unique optimal solution

2.  The LPP is infeasible

3.  The LPP is unbounded

4.  The LPP has multiple optimal solutio

View Answer  
4
Correct Answer :

The LPP has multiple optimal solutio


Explanation :
No Explanation available for this question

Minimum shear strain in orthogonal turning with a cutting tool of zero rake angle is:

1.  0.0

2.  0.5

3.  1.0

4.  2.0

View Answer  
4
Correct Answer :

2.0


Explanation :
No Explanation available for this question

Electrochemical machining is performed to remove material from an iron surface of 20mm×20mm under the following conditions: Inter electrode gap         =  0.2mm    Supply voltage DC        =12 V Specific resistance of electrolyte = 2cm Atomic weight of Iron   = 55.85 Valency of Iron   = 2 Faraday ' s constant = 96540 Coulombs The material removal rat e (in g/s) is

1.  0.3471

2.  3.471

3.   34.71

4.  347.1

View Answer  
4
Correct Answer :

0.3471


Explanation :
No Explanation available for this question
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