Mechanical Engineering Exam  >  Mechanical Engineering Questions  >  If the enthalpies at the entry and exit of a ... Start Learning for Free
If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit is
  • a)
    806.2 m/s
  • b)
    25.5 m/s
  • c)
    36 m/s
  • d)
    1140.2 m/s
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and ...
For nozzle: Steady flow energy equation is:
View all questions of this test
Most Upvoted Answer
If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and ...
Given:
- Enthalpy at entry (h1) = 3450 kJ/kg
- Enthalpy at exit (h2) = 2800 kJ/kg
- Initial velocity (v1) = 0 (negligible)

To find:
- Velocity at the exit (v2)

We can use the energy equation to solve this problem. The energy equation is given as:

h1 + (v1^2)/2 = h2 + (v2^2)/2

where:
- h1 and h2 are the enthalpies at the entry and exit, respectively
- v1 and v2 are the velocities at the entry and exit, respectively

Since the initial velocity (v1) is negligible, the equation simplifies to:

h1 = h2 + (v2^2)/2

Rearranging the equation to solve for v2:

(v2^2)/2 = h1 - h2

v2^2 = 2(h1 - h2)

v2 = √(2(h1 - h2))

Calculating the values:

v2 = √(2(3450 - 2800))

v2 = √(2(650))

v2 = √(1300)

v2 = 36 m/s

Therefore, the velocity at the exit is 36 m/s, which corresponds to option (c).
Explore Courses for Mechanical Engineering exam
Question Description
If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit isa)806.2 m/sb)25.5 m/sc)36 m/sd)1140.2 m/sCorrect answer is option 'D'. Can you explain this answer? for Mechanical Engineering 2026 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit isa)806.2 m/sb)25.5 m/sc)36 m/sd)1140.2 m/sCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit isa)806.2 m/sb)25.5 m/sc)36 m/sd)1140.2 m/sCorrect answer is option 'D'. Can you explain this answer?.
Solutions for If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit isa)806.2 m/sb)25.5 m/sc)36 m/sd)1140.2 m/sCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit isa)806.2 m/sb)25.5 m/sc)36 m/sd)1140.2 m/sCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit isa)806.2 m/sb)25.5 m/sc)36 m/sd)1140.2 m/sCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit isa)806.2 m/sb)25.5 m/sc)36 m/sd)1140.2 m/sCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit isa)806.2 m/sb)25.5 m/sc)36 m/sd)1140.2 m/sCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice If the enthalpies at the entry and exit of a nozzle at 3450 kJ/kg and 2800 kJ/kg and the initial velocity is negligible, then the velocity at the exit isa)806.2 m/sb)25.5 m/sc)36 m/sd)1140.2 m/sCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
Explore Courses for Mechanical Engineering exam

Top Courses for Mechanical Engineering

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev