# Reassessment- Final Examination Question Paper

## Reassessment- Final Examination Question Paper

#### Question No: 1 (20 Marks)

Reassessment- Final Examination Question Paper

1. Calculate the degrees of freedom of the mechanism shown in Figure Q1a.

Figure: Q1a (6 Marks)

1. b. Explain how the inversion applied to four bar mechanism

(14 Marks)

#### Question No: 2 (20 Marks)

1. The rope of the simple pendulum made from nylon. At one end of the rope suspended a mass of 10 gram and length of rope is 1 meter. If the frequency produced two times the initial frequency, then find the length of the rope

(6 Marks)

1. Differentiate free vibration and forced vibration. Explain with an example from oil and gas sector

(14 Marks)

#### Question No: 3 (20 Marks)

1. Differentiate tensile strength and compressive strength of mild steel.

(7 Marks)

1. Find the stress on a bone (1 cm in radius and 50 cm long) that supports a mass of 100 kg and the strain on the bone if it is compressed 0.15 mm by this weight. Find the proportionality constant C for this bone.

(13 Marks)

#### Question No: 4 (20 Marks)

1. Explain basic elements of a closed loop control system used for measurement of force.

(7 Marks)

1. Check the stability of the system using Routh -Hurwitz Criteria and find the value of K for which the system is sable

(13 Marks)

#### Question No: 5 (20 Marks)

1. Explain how the relative roughness affect the friction during flow though pipes.

(10 Marks)

1. What do you understand by minor losses in flow? Identify three minor loss situations in circulation system of oil rigs.

(10 Marks)

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