# A project has six activities (A to F) with respective activity durations 7, 5, 6, 6, 8, 4 days. The network has three paths A-B, C-D and E-F. All the activities can be crashed with the same crash cost per day. The number of activities that need to be crashed to reduce the project duration by 1 day is

1.  1

2.  2

3.  3

4.  6

4

3

Explanation :
No Explanation available for this question

# A company has two factories S1, S2 and two warehouses D1, D2. The supplies from S1 and S2 are 50 and 40 units respectively. Warehouse D1 requires a minimum of 20 units and a maximum of 40 units. Warehouse D2 requires a minimum of 20 units and, over and above, it can take as much as can be supplied. A balanced transportation problem is to be formulated for the above situation. The number of supply points, the number of demand points, and the total supply ( or total demand) in the balanced transportation problem respectively are

1.  2, 4, 90

2.  2, 4, 110

3.  3, 4, 90

4.  3, 4, 110

4

3, 4, 90

Explanation :
No Explanation available for this question

# Two tools P and Q have signatures 50 – 50 – 60 – 80 – 300 – 00 and 50 – 50 – 70 – 70 – 80 – 150 – 0 both ASA respectively. They are used to turn components under the same machining conditions. If hP and hQ denote the peak-to-valley heights of surfaces produced by the tools P and Q, the ratio hP/hQ will be

1.  tan80+cot150 / tan80+cot300

2.  tan150+cot80 / tan300+cot80

3.  tan150+cot70 / tan300+cot70

4.  tan70+cot150 / tan70+cot300

4

tan150+cot80 / tan300+cot80

Explanation :
No Explanation available for this question

# Lt x – 0 x is equal to

1.  0

2.  -1

3.  1

4.  noine

4

1

Explanation :
No Explanation available for this question

# The accuracy of Simpson’s rule quadrature for a step size h is

1.  0(h2)

2.  0(h3)

3.  0(h4)

4.  0(h5)

4

0(h5)

Explanation :
No Explanation available for this question

# For the matrix 4 1 the eigen values are 14

1.  3 and -3

2.  -3 and -5

3.  3 and 5

4.  5 and 0

4

3 and 5

Explanation :
No Explanation available for this question

# The second moment of a circular area about the diameter is given by (D is the diameter).

1.  πD4/4

2.  πD4/16

3.  πD4/32

4.  πD4/64

4

πD4/64

Explanation :
No Explanation available for this question

# A concentrated load of P acts on a simply supported beam of span L at a distance l/3 from the left support. The bending moment at the point of application of the load is given by

1.  PL/3

2.  2PL/3

3.  PL/9

4.  2PL/9

4

2PL/9

Explanation :
No Explanation available for this question

# Two identical circular rods of same diameter and same length are subjected to same magnitude of axial tensile force. One of the rods is made out of mild steel having the modulus of elasticity of 206 Gpa. The other rod is made out of cast iron having he modulus of elasticity of 100 Gpa. Assume both the materials to be homogeneous and isotropic and the axial force causes the same amount of uniform stress in both the rods. The stresses developed are within the proportional limit of the respective materials. Which of the following observations is correct

1.  Both rods elongate by the same amount

2.  Mild steel rod elongates more than the cast iron rod

3.  Cast iron rod elongates more than the mild steel rod

4.  As the stresses are equal strains are also equal in both the rods

4

Cast iron rod elongates more than the mild steel rod

Explanation :
No Explanation available for this question

# Two beams, one having square cross section and another circular cross-section, are subjected to the same amount of bending moment. If the cross sectional area as well as the material of both the beams are the same then

1.  maximum bending stress developed in both the beams is the same

2.  the circular beam experiences more bending stress that the square one

3.  the square beam experiences more bending stress than the circular one

4.  as the material is same both the beams will experience same deformation

4