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Railways, Bridges and Tunnels RBT 5th Sem/CIVIL/May 2015 Diploma Paper

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Railways ,Bridges and Tunnels RBT 5th Sem/Civil/May 2015 Diploma PSBTE Paper

                                   SECTION-A

Q1. Fill in the Blanks                                                                                          15×1=15

(a) Temperature is a _____________ Property
(b) Work done in a free expansion process is ____________
(c) Gas laws are applicable to __________ gases.
(d) Babcock and Wilcox boiler is a ____________ tube boiler.
(e) Second law of Thermodynamics defines _____________
(f) The value of Molar Gas constant is ____________
(g) Diesel Cycle consists of following four processes _______________
(h) Triple point of water exists at _________ temperature and ______ pressure.
 (i) In Throttling process _______ is constant .
 (j) The three modes of heat transfer are _______ , __________ and ___________

                                 SECTION-B

Q2. Write short note (with diagram) on any six:         5X6=30

 (a) Differentiate between reversible and irreversible processes.
 (b) Write a short note on Mollier diagram
 (c) Differentiate between Molar gas constant and Ideal gas constant.
 (d) Compare a fire tube boiler with a water tube boiler.
 (e) Explain the following terms (1) Open system (2) Closed system (3) Isolated system.
 (f) For same compression ratio Otto cycle is more efficient than Diesel cycle, explain.
 (g) Compare a reciprocating air compressor with a rotary compressor.

                                   SECTION-C

Q3. Attempt any three questions.                                                      3×10=30

 Q3 Derive an expression for work done during an Isothermal process.
Q4 Explain construction and working of Babcock and Wilcox boiler with a neat sketch.
Q5 Derive an expression for standard efficiency of an Otto cycle.
Q6 A vessel of capacity 4 m³ has 16 kg of an ideal gas having molecular mass of 44 at a temperature of 25 ºC. Find the pressure of the gas in bar.
Q7 Explain two modes of heat transfer in gases, liquids and solids.

(a) Temperature is a _____________ Property
(b) Work done in a free expansion process is ____________
(c) Gas laws are applicable to __________ gases.
(d) Babcock and Wilcox boiler is a ____________ tube boiler.
(e) Second law of Thermodynamics defines _____________
(f) The value of Molar Gas constant is ____________
(g) Diesel Cycle consists of following four processes _______________
(h) Triple point of water exists at _________ temperature and ____________ pressure.
(i) In Throttling process _______ is constant .
(j) The three modes of heat transfer are _______ , __________ and ___________

Railways ,Bridges and Tunnels RBT 5th Sem/Civil/May 2015 Diploma Paper Click Here


(a) Differentiate between reversible and irreversible processes.
(b) Write a short note on Mollier diagram
(c) Differentiate between Molar gas constant and Ideal gas constant.
(d) Compare a fire tube boiler with a water tube boiler.
(e) Explain the following terms (1) Open system (2) Closed system (3) Isolated system.
(f) For same compression ratio Otto cycle is more efficient than Diesel cycle, explain.
(g) Compare a reciprocating air compressor with a rotary compressor.

Requirement of an ideal permanent way.

Gauge of track and loading gauge.

Sleepers.

Pier and abutment

Rocker bearing

Types of wing walls

Tunnel ventilation

Highway Engineering HE 5th Sem/Civil/May 2019 Diploma PSBTE Paper Click Here

Railways ,Bridges and Tunnels RBT 5th Sem/Civil/ May 2015 Diploma PSBTE Paper

Q 3 Derive an expression for work done during an Isothermal process.
Q 4 Explain construction and working of Babcock and Wilcox boiler with a neat sketch.
Q 5 Derive an expression for standard efficiency of an Otto cycle.
Q 6 A vessel of capacity 4 m³ has 16 kg of an ideal gas having molecular mass of 44 at a temperature of 25 ºC. Find the pressure of the gas in bar.
Q7 Explain two modes of heat transfer in gases, liquids and solids.

Classification of bridges.

Factors affecting the selection of a bridge.

Method of construction of tunnel in a soft rock by needle beam method.

Procedure of construction of tunnels in hard rock with dull face heading method.

Short Note e) Formation width.

Different joints provided in rigid pavements.

Soil erosion and  methods to control soil erosion.

Soil stabilization and different methods of soil stabilization

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