Prep Right
Questions › PMS Punjab › Principles of Engineering › 2023
PPSC · PMS Punjab 2023

Principles of Engineering, Paper I

100 marks · 3 hours · 8 questions
This paper Principles of Engineering · all yearsQ. 1 · Discuss in detail "Free electron…Q. 2 · Differentiate between Miscibility and Interactions.Q. 3 · An alternating voltage is triangular…Q. 4 · What is a P-N junction…Q. 5 · Keeping in view Pakistan, discuss…Q. 6 · Some of the engine experts…Q. 7 · Compare the electrical properties and…Q. 8 · Write detailed notes on the…With this paper← 20222023 →
3 hours · questions hide until you reveal them

Not yet checked 1 of 8 questions have not yet been compared with the official paper.

Q. 1
  1. (a)Discuss in detail "Free electron model". Explain electron hole with the help of diagram. [10]
  2. (b)What do you understand by the following terms? Spherical and chromatic aberration Dispersion and scattering [10]
(20)
Q. 2
  1. (a)Differentiate between Miscibility and Interactions. [10]
  2. (b)A 21g sample of HCl is dissolved in 750 mL of a solvent (density= 1.3 g/mL and molecular weight= 180 g/mol). Assume the volume of HCl is 21 mL. Calculate the solution's molarity, molality, molar fraction, and mass percentage. [10]
(20)
Q. 3
  1. (a)An alternating voltage is triangular in shape, rising at a constant rate to a maximum of 300V in 8 ms and then falling to zero at a constant rate in 4 ms.
  2. (b)the rms voltage. [10]
  3. (c)the periodic time of the supply. [10]
Not yet checked
(20)
Q. 4
  1. (a)What is a P-N junction diode? Explain working of a diode in forward and reversed biased mode. [10]
  2. (b)Write notes on the following: AM FM Delta ASK PWM [10]
(20)
Q. 5
  1. (a)Keeping in view Pakistan, discuss different types of Transmission Lines in use and the reasons of heavy transmission line losses. [10]
  2. (b)Describe power network analysis. What is polyphase system of distributing alternating-current (A.C)? [10]
(20)
Q. 6
  1. (a)Some of the engine experts have the opinion that two stroke petrol engines are noisy & dirty, and it is a dying technology. What is your opinion? Give reasons to support your thoughts. [10]
  2. (b)Describe Drilling and Gear cutting manufacturing processes. [5]
  3. (c)What is Gibbs free energy concept? [5]
(20)
Q. 7
  1. (a)Compare the electrical properties and mechanical properties of engineering ceramics. [10]
  2. (b)What are the basic differences between general purpose plastic and engineering thermo-plastics? [10]
(20)
Q. 8
  1. (a)Write detailed notes on the following terms: Diffusion in Ceramics 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)

Related papers

Principles of Engineering 2019Principles of Engineering 2020Principles of Engineering 2020Principles of Engineering 2021Principles of Engineering 2021Principles of Engineering 2022Principles of Engineering 2022Principles of Engineering 2023Business Administration 2023Chemistry 2023Commerce 2023Commerce 2023Economics 2023Economics 2023Education 2023Education 2023English Literature 2023English Literature 2023English Precis & Composition 2023Geology 2023Geology 2023History 2023Islamic Studies 2023Journalism & Mass Communication 2023Law 2023Mathematics 2023Mathematics 2023Pakistan Studies 2023Political Science 2023Political Science 2023Persian 2023Principles of Engineering 2023Punjabi 2023Sociology 2023Sociology 2023Statistics 2023Statistics 2023Veterinary Science 2023Veterinary Science 2023Zoology 2023Zoology 2023Psychology 2023Psychology 2023Public Administration 2023Public Administration 2023Punjabi 2023Social Work 2023Social Work 2023Urdu 2023

About this paper

The 2023 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.

Disclaimer Prep Right is independent and not affiliated with PPSC.