About Electric Traction

Following are some of the multiple choice questions on the Electric Traction with answers that will help the students in developing their knowledge.

Electric Traction MCQ

1. The types of energy that a load can change electrical energy into.

  • sound
  • heat or thermal
  • light
  • All of above

2. __________ is stored energy. 

  • Potential
  • Kinetic
  • None of the above 
  • All of the above 

3. ____________ is the ability to cause change. 

  • Energy 
  • Force 
  • Friction
  • Motion

4. Static electricity occurs because...

  • of thunder
  • of humid air
  • of neutral particles adding up
  • of a buildup of charges on an object.

5. Electricity does not flow well through insulators. A good example of an insulator is _________________.

  • plastic
  • metal

6. Electricity flows well through "conductors." A good example of a conductor is ___________________.

  • metal
  • wood

7. Que convertidor debo utilizar para alimentar un Torno con motor de 400 V y 50 Hz, si la red disponible es de 660 V y 60 Hz.

  • DC-AC
  • AC-DC
  • AC-AC
  • ninguno de los anteriores

8. 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

9. Si se desea arrancar un motor en forma eficiente con el 65% del voltaje nominal, que arranque será mas apropiado

  • Con Resistencia
  • Con Autotransformador
  • Estrella Delta
  • Ninguno de los anteriores

10. 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

11. A que Regimen se relaciona la potencia Efectiva de un motor

  • Regimen Intermitente
  • Regimen de Corta duración
  • Regimen Continuo
  • Ninguna de las anteriores

12. A material through which heats or electricity flows easily.

  • electric current
  • radiation
  • condutor
  • insulator

13. A positive ion is an atom with more electrons than protons

  • TRUE
  • FALSE

14. It is a reserve of chemical energy that can be transformed into electrical energ

  • battery
  • utilizer
  • wire
  • All of above

15. Resistor

  • A flow of electricity through a conductor
  • a path through which electricity can flow
  • a device that can open or close a circuit
  • an object in an electrical circuit that resists the flow of energy

16. A material that slows or stops the flow of energy, such as thermal energy, electricity and sound.

  • electric current
  • radiation
  • condutor
  • insulator

17. Como son la cupla C y la velocidad V, cuanto un vehículo eléctrico esta usando freno regenerativo

  • +C y +V
  • -C y -V
  • -C y +V
  • -C y -V

18. Un extractor presenta una cupla resistente similar a la funcion matematica:

  •  y=axy=\frac{a}{x}y=xa​  
  •  y=x+by=x+by=x+b  
  •  y=x2+cy=x^2+cy=x2+c  
  • Ninguna de las anterisores

19. Para calculo simplificado del tiempo de aceleración, si la cupla de aceleración es igual a: Cac=0.45(Car+Cmax⁡)−0.5Cn NcNnCac=0.45\left(Car+C\max\right)-0.5Cn\ \frac{Nc}{Nn}Cac=0.45(Car+Cmax)−0.5Cn NnNc​  corresponde a  

  • Cupla resistente Constante
  • Cupla resistente Lineal
  • Cupla resistente Parabolica
  • Ninguna de las anteriores

20. Que motor es de tracción por excelencia

  • Motor síncrono
  • Motor shunt
  • Motor serie
  • Motor asíncrono

21. La ecuación del momento de inercia equivalente rotacional es:

  • J=m(vw)2J=m\left(\frac{v}{w}\right)^2J=m(wv​)2
  • J=m(vw)2+Jm+J1Z12+J2Z12Z22+...+JnZ12Z22...Zn2J=m\left(\frac{v}{w}\right)^2+Jm+\frac{J1}{Z1^2}+\frac{J2}{Z1^2Z2^2}+...+\frac{Jn}{Z1^2Z2^2...Zn^2}J=m(wv​)2+Jm+Z12J1​+Z12Z22J2​+...+Z12Z22...Zn2Jn​
  • J=Jm+J1Z12​+J2​Z12Z22+...+Jn​Z12Z22...Zn2J=Jm+\frac{J1}{Z1^2}​+\frac{J2​}{Z1^2Z2^2}+...+\frac{Jn​}{Z1^2Z2^2...Zn^2}J=Jm+Z12J1​​+Z12Z22J2​​+...+Z12Z22...Zn2Jn​​
  • Ninguna de las anteriores

22. The loss of an unbalanced electric charge is an

  • electric force
  • electric field
  • electric discharge
  • All of above

23. Metals such as copper, iron, gold, and silver are ...

  • conductors
  • brittle
  • insulators
  • resistors

24. Which of the following an insulator?

  • copper
  • wood
  • silver
  • salt water

25. What parts of an atom are in the nucleus?

  • Protons
  • Neutrons
  • Electrons
  • Protons and Neutrons

26. A metal spoon is an example of _____.

  • a conductor
  • an insulator

27. The purpose of the power source is to push electrons through the electric circuit.

  • True
  • False

28. Click any that are examples of power sources.

  • wall outlet
  • generator
  • battery
  • All of above

29. When a switch is closed, it will complete a circuit and allow electricity to flow.

  • True
  • False

30. What object could a switch be compared to?

  • a fan blade
  • a roller coaster
  • a drawbridge
  • a belt buckle

31. The purpose of a load is to change electrical energy to another type of energy that can be used by people.

  • True
  • False

32. If an object has a net charge of +2e this means it has

  • lost 2 electrons
  • gained 2 electrons
  • lost 2 protons
  • gained 2 protons

33. Glass, rubber, silk, and plastic are all examples of

  • Conductors
  • Insulator
  • Thermel conductivity
  • Materials

34. An object that is positively charged contains more protons than electrons.

  • True
  • False
  • I need more information
  • All of above

35. How many paths for the flow of electricity does a simple electric circuit have?

  • 1
  • 2
  • 3
  • 4

36. How would the movement of electrons in electric current be described?

  • sit still
  • build up
  • jump
  • steady flow

37. What is the path for the flow of electricity called?

  • circuit
  • charge
  • discharge
  • components

38. What other word means component?

  • path
  • part
  • power
  • pop

39. If a substance has an excess number of electrons on its surface, what type of charge does it have?

  • A negative charge
  • A positive charge
  • A neutral charge
  • A nuclear charge

40. Electric charges that are different _______ each other.

  • Attract
  • Repel

41. The rate of acceleration on sub-urban or urban services is restricted by the consideration of

  • Engine power
  • Track curves
  • Passenger Discomfort
  • Track size

42. Suri transmission is

  • Electrical pneumatic
  • Mechanical electrical
  • Hydro mechanical
  • Hydro pneumatic

43. The number of passenger coaches that can be attached to a diesel engine locomotive on broad gauge is usually restricted to

  • 5
  • 10
  • 14
  • 17

44. The steam engine provided on steam locomotives is

  • Single acting condensing type
  • Single acting non-condensing type
  • Double acting condensing type
  • Double acting non-condensing type

45. Watt-hours per tonne km is usually the specific energy consumption for suburban services.

  • 15 - 20
  • 50 - 75
  • 120 - 150
  • 160 - 200

46. Locomotives with monometer bogies have

  • Uneven distribution of tractive effect
  • Suitability for passenger as well as freight service
  • Lot of skidding
  • Low coefficient of adhesion

47. Locomotive having mono-motor bogies

  • Has better coefficient of adhesion
  • Are suited both for passenger as well as freight service
  • Has better riding qualities due to the reduction of lateral forces
  • Has all above qualities

48. Which of the following braking systems is used on steam locomotives?

  • Hydraulic system
  • Pneumatic system
  • Vacuum system
  • None of the above

49. In case of a steam engine an average coal consumption per km is nearly

  • 150 to 175 kg
  • 100 to 120 kg
  • 60 to 80 kg
  • 28 to 30 kg

50. Methods can bring the locomotive to dead stop.

  • Plugging braking
  • Rheostat braking
  • Regenerative braking
  • None of the above

Enjoyed the Quiz. Share this with friends

Comments

Add Your Review

Your email address will not be published.

Subscribe to Newsletter!

Subscribe to get latest updates and information.