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PPSC · PMS Punjab 2022

Principles of Engineering, Paper I

100 marks · 3 hours · 7 questions
This paper Principles of Engineering · all yearsQ. 1 · What is difference between wave…Q. 2 · What are effects of different…Q. 3 · What do you understand by…Q. 4 · Discuss in detail AC Induction…Q. 5 · In given Fig. assume that…Q. 7 · Write detailed notes on the…Q. 8 · Differentiate between beams and columns.With this paper← 20212022 →
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Not yet checked 2 of 7 questions have not yet been compared with the official paper.

Q. 1
  1. (a)What is difference between wave mechanics and matrix mechanics?
  2. (b)What do you understand by the term "superconductivity'? Discuss low temperature and high temperature superconductors and their applications. [20]
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(20)
Q. 2
  1. (a)What are effects of different Crystalline structure on same substance on its properties? [7]
  2. (b)Discuss in detail heat capacity of solids and gases. What is the significance of gas constant? [7]
  3. (c)Explain in detail Graham's Law of Diffusion and Roult's law. [6]
(20)
Q. 3
  1. (a)What do you understand by electromagnetic induction? Explain, how Lenz's law is helpful in determining the direction of induced current? [10]
  2. (b)What must be the magnitude of an isolated positive charge for the electric potential of 120 V at 15 cm from the charge? [5]
  3. (c)What do you understand by magnetic hysteresis? [5]
(20)
Q. 4
  1. (a)Discuss in detail AC Induction motor and synchronous motor and compare their Performance and Efficiency. [10]
  2. (b)Explain Copper & Iron Losses in step-up/step-down Transformers. [10]
(20)
Q. 5
  1. (a)In given Fig. assume that a 20-mm-diameter rivet joins the plates that are each 110 mm wide.
  2. (b)the largest average tensile stress in the plates.
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(20)
Q. 7
  1. (a)Write detailed notes on the following terms: i) Diffusion in Ceramics ii) Creep Resistant Materials [10]
  2. (b)The Young's moduli of alkali metals are given below in units of GN m-2: Li (11.5), Na (9.0), K (3.5), Rb (2.7), Cs (1.8) and Fr (1.7). Compare this with the corresponding values of the melting points. Give a reason for this sequence [10]
(20)
Q. 8
  1. (a)Differentiate between beams and columns. [5]
  2. (b)What is the roll of traffic appraisal in highway administration and scheme preparation? [5]
  3. (c)What kind of impacts have water resources projects on Environment in Pakistan? [5]
  4. (d)What are the different kinds of pressure measuring devices used in engineering applications? [5]
(20)

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The 2022 PMS Punjab Principles of Engineering paper set by the PPSC. Question wording only; questions marked “Not yet checked” have not been compared with the official paper yet.

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