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## Railways ,Bridges and Tunnels RBT 5th Sem/Civil/ dec 2016 Diploma PSBTE Paper

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### Section a Railways ,Bridges and Tunnels RBT 5th Sem/Civil/dec 2016 Diploma PSBTE Paper

The railways are the ___________ as compared to other modes of transportation. Â __________ Gauge is known as Standard gauge of the world. The superelevation is provided by raising the __________ Of the sleeper. The curves provided at the change of gradient is called __________ A culvert has a span usually less than ____________ The walls constructed at an acute angle with the abutments at both of their ends are known as ___________ An abutment of a bridge serves both as pier and ____________ The best shape of tunnel to be used for carrying a road or railway track is __________ section. The size of tunnels depends upon the __________ and volume of traffic. The most common system of signaling in India is ______________ Points and crossings are provided for change gradient on permanent ways.T/F A bridge crossing the drain not at right angle is called skew bridge.T/F The natural ventilation system of tunnels is commonly used.T/F iv. Scouring increases the stability of bridge.T/F Scouring increases the stability of bridge.T/F Â Welding of rails decreases their life.T/F

### Section B :Railways ,Bridges and Tunnels RBT 5th Sem/Civil/dec 2016 Diploma PSBTE Paper

What are the advantages of bearing plates?.

What are the fuctions of ballast?

#### Fuctions of ballast.

List types of sleepers and requirments of good sleeper.

#### Types of sleepers and requirments of good sleeper.

Â What are the requirements of an ideal crossing and also draw the sketch showing the component parts of a crossing.

#### Requirements of an ideal crossing and also draw the sketch showing the component parts of a crossing.

What is the necessity of providing ventilation in tunnels ?Also describe the different methods of ventilation.

#### Describe the different methods of ventilation.

What factors taken into consideration for deciding the location of a bridge?

#### Factors taken into consideration for deciding the location of a bridge.

Define Wing walls and Abutments of a bridge. Also describe the functions.

#### Wing walls and Abutments of a bridge and its functions.

Â What are the advantages of Track maintenance?

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

### Section c :-Railways ,Bridges and Tunnels RBT 5th Sem/Civil/DEC 2016 Diploma PSBTE Paper

What are the requirements of an ideal Permanent way track? List out its component parts.

#### Requirements of an ideal Permanent way track and its component parts.

Explain the details of construction of a tunnel in soft rock by needle beam method. Also describe the precautions to be observed during work?

#### Describe the precautions to be observed during work.

Explain the classification of the bridge according to high flood level,span length and Alignment.

#### Classification of the bridge according to high flood level,span length and Alignment.

What are the factors which affects the rail route?Describe the various gauges prevalent in India.