Download GTU BE/B.Tech 2019 Winter 4th Sem New 2140907 Applied Thermal And Hydraulic Engineering Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 4th Sem New 2140907 Applied Thermal And Hydraulic Engineering Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? IV (New) EXAMINATION ? WINTER 2019
Subject Code: 2140907 Date: 07/12/2019

Subject Name: Applied Thermal and Hydraulic Engineering

Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Define steam rate, thermal conductivity and ton of refrigeration. 03
(b) Define density, viscosity, surface tension and capillary. 04
(c) Explain with a neat sketch the components of centrifugal pump. 07

Q.2 (a) Write the classification of heat exchangers. 03
(b) Explain open cycle gas turbine with schematic diagram. 04
(c) Explain the working of a simple air refrigeration system without
evaporative cooling with neat sketch.
07
OR
(c) Plot schematic diagram, T-s and h-s diagram of Rankine cycle. Derive
the expression for thermal efficiency of Rankine cycle.
07
Q.3 (a) Define dry air, relative humidity and dry bulb temperature. 03
(b) Enlist the different methods of improving efficiency of Rankine cycle
and explain any one in detail.
04
(c) Derive the expression for thermal efficiency of ideal Brayton cycle in
terms of pressure ratio (rp). Plot the same cycle on T-s and p-v diagram
also.
07
OR
Q.3 (a) Write the types of fins and their application. 03
(b) Define black body, opaque body, white body and gray body 04
(c) Derive expression for LMTD for parallel flow heat Exchanger. 07
Q.4 (a) Describe the absolute pressure, atmospheric pressure and gauge
pressure.
03
(b) What is specific speed of centrifugal pump? Derive an expression of
specific speed of centrifugal pump.
04
(c) Write a short note on construction and working of Pelton wheel turbine
with neat sketch.
07
OR
Q.4 (a) Write classification of turbines. 03
(b) Define cavitation and explain in brief about cavitation in pumps. 04
(c) Derive an expression for the discharge through a venturimeter for
measurement of flow through pipe with neat sketch.
07
Q.5 (a) Define notches and weirs. List the types of notches. 03
(b) Explain U-tube manometer. 04
(c) State Bernoulli?s equation and write assumptions and applications of
Bernoulli?s equation.
07
OR

Q.5 (a) Differentiate between Francis and Kaplan turbines. 03
(b) What is draft tube? List the functions of draft tube. 04
(c) Obtain an expression for the work done by the impeller of a centrifugal
pump on water per second per unit weight of water.
07
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