PUNJAB PUBLIC SERVICE COMMISSION Combined Competitive Examination (CCE) 2022 For Recruitment to the Posts of Provincial Management Service (PMS)
SUBJECT: Principle of Engineering (Paper-1) Time Allowed: 3 Hours Maximum Marks: 100
Note: Attempt any FIVE questions in all. Scientific calculator is allowed.
Instructions
Attempt any FIVE questions in all.
Calculator is allowed (not programmable).
Draw clear diagrams where necessary.
All parts must be attempted at one place instead of different pages.
Do not overwrite or cross answers.
Question 1
(a) Explain in detail the Pauli Exclusion Principle. What do you understand by the term Zero Point Energy? How do you relate it with the Uncertainty Principle?
(b) Discuss in detail the Free Electron Model. What are the main assumptions which are considered? Explain the Electron-Hole concept with the help of a suitable diagram
Question 2
(a) What do you mean by Galvanic Cell? Explain buffer solution in chemistry with examples.
(b) Explain refractive index. How is it measured? Also discuss its applications. What is photoelectric effect? How are X-rays produced? (10 + 10 = 20 Marks)
Question 3
(a) For engineering applications, which operating system is best for computers? What are security and privacy issues rising due to internet and smart phones?
(b) Explain the working of Class A and Class B amplifiers. Write notes on the following modulations: i) AM ii) FM iii) PM iv) PWM (10 + 10 = 20 Marks)
Question 4
(a) What are the inherent problems of two-stroke engines? Discuss lubrication systems of two-stroke engines. What measures are usually taken to reduce exhaust pollution and noise?
(b) Draw the actual PV diagram of a 4-stroke petrol engine and explain it step by step.
(c) Numerical: Mr. Aslam’s car has a 3-litre spark ignition V6 engine operating on a 4-stroke cycle at 3600 RPM. Compression ratio is 9.5, connecting rod length is 16.6 cm, and engine is square (Bore = Stroke). Combustion ends at 20° ATDC.
Calculate:
Cylinder bore
Stroke length
(10 + 5 + 5 = 20 Marks)
Question 5
(a) Differentiate between traditional and engineering ceramics. Also explain processing steps of engineering ceramics and their electrical & mechanical properties.
(b) What do you know about the use of ceramics in weapons and explosives? (15 + 5 = 20 Marks)
Question 6
(a) How is a site selected for construction of a dam? Write a note on disadvantages of water dams for electricity production.
(b) A small inspection car of mass 200 kg runs along a fixed overhead cable and is controlled by attached cable at point A. Determine acceleration when control cable is horizontal under tension of 2.4 kN. Also find total force P exerted by supporting cable on wheels. (10 + 10 = 20 Marks)
Question 7
(a) A jet transport A flying east at 800 km/h observes another jet B passing underneath. Nose of B is pointed 45° northeast, but appears to passengers in A as moving away at 60° angle. Determine true velocity of B.
(b) Write notes on Low-cost road construction in developing countries (5 × 4 = 20 Marks)
Question 8
Write notes on the following properties of materials: (a) Ultimate Tensile Strength (b) Toughness (c) Reliability (d) Ductility (e) Malleability
SUBJECT: Principle of Engineering (Paper-II)
Time Allowed: 3 Hours Maximum Marks: 100
Question 1
(a) Differentiate between decision making under uncertainty and decision making under risk. Also explain the payoff table and its limitations, which lead to the use of sequential decision trees.
(b) A person is planning to sue the manufacturer of a home improvement product which he believes caused damage to his property. He is planning to sue the company for $3.5 million. The company has offered a settlement of $650,000, of which the complainant would receive $595,000 after processing fees. His attorney has advised him that there is a 50% chance of winning the case. If he loses, he will have to bear court and legal fees amounting to $750,000. If he wins, there is a 50% chance that he will get full settlement, in which case he would receive $2.0 million after deduction of attorney fees. There also exists a 50% chance that he may get a lesser amount of $1.10 million, of which he would ultimately receive $500,000 after all deductions. Using decision tree analysis, decide whether the complainant should sue the organization or settle the matter.
Question: 2
(a) In the context of project management, cliscuss different types of logical dependencies that may exist within precedence relationships of the activities. Give examples while,providing youi answer. (b) Following is the data for a project, construct the network diagram, identify the critical path and determine thr Project duration
Activity
Predecessor
Duration (Weeks)
A
–
6
B
A
6
C
A
4
D
A
2
E
B
4
F
B, C, D
5
G
B
3
H
E, F
2
(8 + 12 = 20 Marks)
Question 3
Write a comprehensive note on quality-cost relationship, including:
Costs of poor quality
Categorization of quality costs
Common index measures for reporting quality costs
Relationship with profitability and competitiveness of an organization
Question 4
What do you understand by e-manufacturing? Provide a detailed overview of the various components and their roles in helping to enable it. (20 Marks)
Question 5
(a) In the context of inventory management, explain the total inventory cost function as it applies to quantity discount scenarios for determining order quantities. Also elaborate why the optimal point as determined by the basic saw-tooth model may not be directly applicable for determining order size when different quantity discount schedules are compared for feasibility. Use graphical illustration to explain your answer. (10 Marks)
(b) The daily demand of an electronic chip is uniformly distributed with a mean of 26 units and standard deviation of 10 units. The lead time for receiving an order from the distributor is 9 days. The manager wants to maintain a 75% service level.
What reorder point (ROP) should be used to meet this service level?
If the service level is increased to 95%, what will be the corresponding increase in ROP?
(10 Marks)
Question 6
(a) What is meant by participatory approach in managing organizational tasks? Do you think Quality Circles qualify as a participatory approach? Provide arguments in support of your answer.
(b) The following set of seven jobs is to be processed through two work centers in a printing company. The sequence is printing first and then binding.
Job
Printing (Hours)
Binding (Hours)
T
5
7
U
7
9
V
4
10
W
7
6
X
10
9
Y
4
5
Z
7
8
Use an appropriate sequencing approach to determine the job order.
Question 8 (MCQs) Choose the correct option:
(i) A structured process that translates the voice of the customer into technical design requirements is known as: a) Concurrent design b) Modular design c) Quality function deployment d) Reverse engineering
(ii) The term “Hoshin” refers to: a) Performance assessments including non-financial metrics b) Action plans generated from policy deployment process c) Characteristics of a product for purchase eligibility d) None of the above
(iii) The degree to which a firm produces the parts of its product is known as: a) Vertical integration b) Batch production c) Mass customization d) Positioning
(iv) Service blueprint refers to: a) Visual comparison of customer perceptions b) Process flowchart emphasizing customer interaction and failure points c) Definition of target market and customer experience d) None of the above
(v) Technique used to determine demand volume required to be profitable: a) Benefit-cost ratio b) Payback period c) Process strategy d) Break-even analysis
(vi) A production planning strategy where output equals forecasted demand: a) Level strategy b) Chase strategy c) Mixed strategy d) None of the above
(vii) A schematic diagram showing location preference using line thickness: a) Relationship diagram b) Block diagram c) Process layout d) None of the above
(viii) Japanese philosophy of continuous small improvements involving everyone: a) Kanban b) Kaizen c) Haiku d) None of the above
(ix) The amount of time an activity can be delayed without delaying project completion: a) Crash time b) Optimistic time c) Dummy d) None of the above
(x) Iterative group forecasting method aiming at consensus: a) Delphi method b) Consumer survey c) Sales force composite d) None of the above
(xi) Inventory level at which new order is placed: a) Service level b) Order cycle c) Stockout d) None of the above
(xii) In linear programming, symbols representing activity levels are: a) Decision variables b) Constraints c) Slack variables d) Surplus variables
(xiii) “Jidoka” refers to: a) Standard container card system b) Authority to stop production line for quality issues c) Just-in-time production system d) Foolproof defect prevention mechanism
(xiv) Fishbone diagram is also known as: a) Pareto chart b) Value stream map c) Time function map d) None of the above
(xv) Time required by an average worker under normal conditions: a) Normal time b) Predetermined motion time c) Standard time d) None of the above
(xvi) Investment is economically beneficial if: a) MARR < IRR b) MARR > IRR c) MARR = IRR d) No criteria exists
(xvii) Demand variability amplification in supply chain is called: a) Cross docking b) Bullwhip effect c) Buffering d) None of the above
(xviii) Accounting value of an asset is called: a) Value added b) Esteem value c) Book value d) Salvage value
(xix) Cost common to all alternatives is: a) Variable cost b) Marginal cost c) Opportunity cost d) Sunk cost
(xx) Higher output increases per unit cost is called: a) Economies of scale b) Diseconomies of scale c) Sunk cost d) Quantity production
