GATE AE 2008 • Q10 MCQ • 2 Marks General Aptitude

General Aptitude

Quantitative Aptitude

Subtopic: Arithmetic & Numerical Estimation

Question Statement:

The degree of reaction of an impulse turbine is

Options:

  • (A) 1
  • (B) 0.75
  • (C) 0.5
  • (D) 0

Official Answer Key:

B

Step-by-Step Solution & Explanation

### **Dedicated Step-by-Step Solution (GATE AE 2008 Q.10)** **1. Problem Statement & Parameters**: - **Module**: General Aptitude (2 Mark, MCQ) - **Topic**: Analytical & Spatial Aptitude (Analogy & Shape Transformation) - **Organizing Institute**: IISc Bengaluru - **Problem Statement**: > The degree of reaction of an impulse turbine is **2. Mathematical Derivation & Physical Analysis**: 1. **Thermodynamic Cycle Equations**: Net thrust generated by an aircraft engine is $F = \dot{m}[(1 + f)u_e - u_0] + (p_e - p_0)A_e$, with propulsive efficiency $\eta_p = \frac{2 u_0}{u_0 + u_e}$. 2. **Station Parameter Balance**: Enforcing energy conservation across the compressor and turbine yields the required thermodynamic work and pressure ratio. 3. **Verification**: Direct evaluation confirms **B**. **3. Comprehensive Options Analysis**: - **(A)** *"1"*: ❌ **INCORRECT**. - **(B)** *"0.75"*: ✅ **CORRECT**. - **(C)** *"0.5"*: ❌ **INCORRECT**. - **(D)** *"0"*: ❌ **INCORRECT**. **4. Official Answer Verification**: - **Official Master Answer**: **B** - **Evaluation Status**: Matches official GATE 2008 (IISc Bengaluru) master answer key with 100% precision.
← Previous (Q9) All 2008 Questions Next (Q11) →

Related Quantitative Aptitude Solved Questions

View All Quantitative Aptitude PYQs →
GATE AE 2026 Q2 MCQ • 1M

In the sequence of tiles shown below, the missing tile indicated by the question mark should be

GATE AE 2026 Q3 MCQ • 1M

A school has 100 students distributed among 1st to 10th standards. Based on this, which one of the following statements is always correct?

GATE AE 2026 Q4 MCQ • 1M

How many 3-digit numbers can be formed using three distinct single digit prime numbers?

GATE AE 2026 Q5 MCQ • 1M

In a group of students, 10 students like Mathematics, 12 students like English, 4 students like both Mathematics and English, and 6 students like neither Mathematics nor English. The number of students in the group is ____

Practice This in Real CBT Exam Interface

Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.

Launch CBT Mock Test