Q.1
The wheels of a train, engine as well as bogies, are slightly tapered to
Q.2
Coefficient of adhesion is
Q.3
Specific energy consumption becomes
Q.4
Overhead lines for power supply to tram cars are at a minimum height of
Q.5
In case of ___________ free running and coasting periods are generally long.
Q.6
Energy consumption in propelling the train is required for which of the following?
Q.7
Series motor is not suited for traction duty due to which of the following account?
Q.8
Specific energy consumption is affected by which of the following factors?
Q.9
For 25 kV single phase system power supply frequency is
Q.10
For given maximum axle load tractive efforts of AC. locomotive will be
Q.11
Quadrilateral speed-time curve pertains to which of the following services?
Q.12
The value of coefficient of adhesion will be high when rails are
Q.13
Specific energy consumption is least in _______ service.
Q.14
In India diesel locomotives are manufactured at
Q.15
Electric locomotives in India are manufactured at
Q.16
Which of the following state capitals is not on broad gauge track ?
Q.17
The speed of a superfast train is
Q.18
The normal value of adhesion friction is
Q.19
In a steam locomotive electric power is provided through
Q.20
Glass, rubber, silk, and plastic are all examples of
  • Conductors
  • Insulator
  • Thermel conductivity
  • Materials
Q.21
The types of energy that a load can change electrical energy into.
  • sound
  • heat or thermal
  • light
  • motion or kinetic
  • All of above
Q.22
__________ is stored energy.
  • Potential
  • Kinetic
  • None of the above
  • All of the above
Q.23
____________ is the ability to cause change.
  • Energy
  • Force
  • Friction
  • Motion
Q.24
Static electricity occurs because...
  • of thunder
  • of humid air
  • of neutral particles adding up
  • of a buildup of charges on an object.
Q.25
Se requiere establecer en un accionamiento un sistema de freno eléctrico rápido, Seria:
  • Freno por Contracorriente
  • Freno mecánico de Disco
  • Freno por Corriente Continua
  • Ninguno de los anteriores
Q.26
A que Regimen se relaciona la potencia Efectiva de un motor
  • Regimen Intermitente
  • Regimen de Corta duración
  • Regimen Continuo
  • Ninguna de las anteriores
Q.27
Cuando se arranca un motor con arranque Estrella-Deltael voltaje al arrancar respecto al voltaje nominal es:
  • 50.7%
  • 65.0%
  • 57.7%
  • 66.7
Q.28
Si se desea arrancar un motor en forma eficiente con eldel voltaje nominal, que arranque será mas apropiado
  • Con Resistencia
  • Con Autotransformador
  • Estrella Delta
  • Ninguno de los anteriores
Q.29
Que convertidor debo utilizar para alimentar un Torno con motor deV y Hz, si la red disponible es deV yHz.
  • DC-AC
  • AC-DC
  • AC-AC
  • ninguno de los anteriores
Q.30
The main function of capacitor is to ......
  • supply energy to the circuit
  • decrease the voltage difference between capacitor plates
  • store charges in capacitor
  • All of above
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