JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III Year ENGINEERING ECONOMICS AND ACCOUNTANCY Previous Question Paper (September - 2021 - R18)

Knowledge of Engineering Economics is essential for engineers to bridge the gap between technical design and financial viability. The primary benefits include:

• Decision-Making: It provides a systematic framework for choosing between competing technical alternatives based on economic efficiency.
• Resource Optimization: It enables the optimal allocation of scarce resources, ensuring that projects maximize output relative to costs.
• Risk Assessment: It allows for the evaluation of financial risks associated with technological investments and long-term project lifecycles.
• Cost Control: It helps in identifying cost drivers, thereby facilitating better budgeting and cost-reduction strategies during the design phase.

The Methodology of Engineering Economics follows a structured, scientific approach to problem-solving:

1. Define the Problem: Clearly identify the objective, the constraints, and the alternatives available.
2. Collect Data: Gather relevant information, including initial capital costs, operating expenses, and projected revenues.
3. Identify Alternatives: List all feasible technical solutions that meet the defined requirements.
4. Select Criteria: Choose an economic measure of merit, such as Net Present Value (NPV), Internal Rate of Return (IRR), or Benefit-Cost Ratio.
5. Economic Analysis: Apply mathematical models to compare alternatives. A fundamental formula used in this analysis is the present value of a future sum:
P = F / (1 + i)^n
6. Sensitivity Analysis: Test how changes in variables (like interest rates or inflation) impact the outcome.
7. Selection and Implementation: Choose the best alternative and monitor performance against the projected economic model.

The Law of Demand states that, ceteris paribus (all other factors remaining constant), there is an inverse relationship between the price of a commodity and the quantity demanded. As the price of a good increases, the quantity demanded decreases, and as the price decreases, the quantity demanded increases.

The Exceptions to the Law of Demand occur when the demand curve slopes upward, meaning more is bought at higher prices. These include:

• Giffen Goods: Highly inferior goods where the negative income effect of a price rise outweighs the substitution effect, leading to a decrease in consumption as price falls.
• Veblen Goods (Conspicuous Consumption): Luxury items (e.g., designer jewelry, high-end cars) where a higher price increases the status value, leading to higher demand.
• Speculative Goods: If consumers expect prices to rise further in the future, they may increase their current purchases despite a price hike (e.g., gold or stocks).
• Ignorance/Quality Illusion: Consumers may sometimes equate a higher price with superior quality, leading to increased demand for expensive products.