Question 1

The free-running speed of a train does NOT depend on the

Accepted Answer

A) duration of stops 
B) distance between stops 
C) running time 
D) acceleration. 
A) duration of stops 
B) distance between stops 
C) running time 
D) acceleration. A

Question 2

In case of locomotives the tractive power is provided by

Accepted Answer

A) single cylinder double acting steam engine 
B) double cylinder, single acting steam engine 
C) double cylinder, double acting steam engine 
D) single stage steam turbine 
A) single cylinder double acting steam engine 
B) double cylinder, single acting steam engine 
C) double cylinder, double acting steam engine 
D) single stage steam turbine C

Question 3

What is the total number of cells present in a 12-volt battery?

Accepted Answer

A) 5 
B) 6 
C) 3 
D) 4 
A) 5 
B) 6 
C) 3 
D) 4 B

Question 4

Which of the following drives is suitable for mines where explosive gas exists?

Accepted Answer

A) steam engine 
B) diesel engine 
C) battery locomotive 
D) any of the above 
A) steam engine 
B) diesel engine 
C) battery locomotive 
D) any of the above

Question 5

The major disadvantage of carbon arc welding is that

Accepted Answer

A) there is occurrence of blow holes 
B) electrodes are consumed fast 
C) separate filler rod is needed 
D) bare electrodes are necessary. 
A) there is occurrence of blow holes 
B) electrodes are consumed fast 
C) separate filler rod is needed 
D) bare electrodes are necessary.

Question 6

In electric welding, arc blow can be avoided by

Accepted Answer

A) using bare electrodes 
B) welding away from earth ground connection 
C) using a.c. welding machines 
D) increasing arc length 
A) using bare electrodes 
B) welding away from earth ground connection 
C) using a.c. welding machines 
D) increasing arc length

Question 7

Static UPS requires

Accepted Answer

A) only rectifier 
B) only inverter 
C) both inverter and rectifier 
D) none of the mentioned 
A) only rectifier 
B) only inverter 
C) both inverter and rectifier 
D) none of the mentioned

Question 8

The return circuit for tram cars is through

Accepted Answer

A) neutral wire 
B) rails 
C) cables 
D) common earthing 
A) neutral wire 
B) rails 
C) cables 
D) common earthing

Question 9

Which is the material used to as anode in a lithium-ion battery?

Accepted Answer

A) brass foil coated with graphite 
B) aluminum foil coated with graphite 
C) copper foil coated with graphite 
D) stainless steel coated with graphite 
A) brass foil coated with graphite 
B) aluminum foil coated with graphite 
C) copper foil coated with graphite 
D) stainless steel coated with graphite

Question 10

In a steam locomotive electric power is provided through

Accepted Answer

A) overhead wire 
B) battery system 
C) small turbo-generator 
D) diesel engine generator 
A) overhead wire 
B) battery system 
C) small turbo-generator 
D) diesel engine generator

Question 11

Earthing is necessary to give protection against

Accepted Answer

A) electric shock 
B) voltage fluctuation 
C) overloading 
D) high temperature of the conductors 
A) electric shock 
B) voltage fluctuation 
C) overloading 
D) high temperature of the conductors

Question 12

In India diesel locomotives are manufactured at

Accepted Answer

A) ajmer 
B) varanasi 
C) bangalore 
D) jamalpur 
A) ajmer 
B) varanasi 
C) bangalore 
D) jamalpur

Question 13

The horsepower of steam locomotives is

Accepted Answer

A) upto 1500 
B) 1500 to 2000 
C) 2000 to 3000 
D) 3000 to 4000 
A) upto 1500 
B) 1500 to 2000 
C) 2000 to 3000 
D) 3000 to 4000

Question 14

For which of the following locomotives the maintenance requirements are the least?

Accepted Answer

A) steam locomotives 
B) diesel locomotives 
C) electric locomotives 
D) equal in all of the above 
A) steam locomotives 
B) diesel locomotives 
C) electric locomotives 
D) equal in all of the above

Question 15

In case of---------free running and coasting periods are generally long.

Accepted Answer

A) main-line service 
B) urban wervice 
C) sub-urban service 
D) all of the above 
A) main-line service 
B) urban wervice 
C) sub-urban service 
D) all of the above

Question 16

Skidding of a vehicle always occurs when

Accepted Answer

A) braking effort exceeds its adhesive weight 
B) it negotiates a curve 
C) it passes over points and crossings 
D) brake is applied suddenly. 
A) braking effort exceeds its adhesive weight 
B) it negotiates a curve 
C) it passes over points and crossings 
D) brake is applied suddenly.

Question 17

No discontinuity is observed in case of

Accepted Answer

A) short break static ups configuration 
B) long break static ups configuration 
C) no break static ups configuration 
D) rotating type ups configuration 
A) short break static ups configuration 
B) long break static ups configuration 
C) no break static ups configuration 
D) rotating type ups configuration

Question 18

In tramways which of the following motors is used?

Accepted Answer

A) d.c. shunt motor 
B) d.c. series motor 
C) a.c. three phase motor 
D) a.c. single phase capacitor start motor 
A) d.c. shunt motor 
B) d.c. series motor 
C) a.c. three phase motor 
D) a.c. single phase capacitor start motor

Question 19

Longer coasting period for a train results in

Accepted Answer

A) higher acceleration 
B) higher retardation 
C) lower specific energy consumption 
D) higher schedule speed. 
A) higher acceleration 
B) higher retardation 
C) lower specific energy consumption 
D) higher schedule speed.

Question 20

Which of the following has the highest value of thermal conductivity?

Accepted Answer

A) water 
B) steam 
C) solid ice 
D) melting ice 
A) water 
B) steam 
C) solid ice 
D) melting ice

The free-running speed of a train does NOT depend on the

In case of locomotives the tractive power is provided by

What is the total number of cells present in a 12-volt battery?

Which of the following drives is suitable for mines where explosive gas exists?

The major disadvantage of carbon arc welding is that

In electric welding, arc blow can be avoided by

Static UPS requires

The return circuit for tram cars is through

Which is the material used to as anode in a lithium-ion battery?

In a steam locomotive electric power is provided through

Earthing is necessary to give protection against

In India diesel locomotives are manufactured at

The horsepower of steam locomotives is

For which of the following locomotives the maintenance requirements are the least?

In case of---------free running and coasting periods are generally long.

Skidding of a vehicle always occurs when

No discontinuity is observed in case of

In tramways which of the following motors is used?

Longer coasting period for a train results in

Which of the following has the highest value of thermal conductivity?

Lighting and Refrigeration Systems

HVAC and Heating Systems: Understanding Compressors, Cooling Towers, Filters, and Heat Transfer Methods

Understanding Grounding and Earthing in Electrical Systems

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Exam 3: Thermal Conductivity, Welding, and Locomotives

The free-running speed of a train does NOT depend on the

In case of locomotives the tractive power is provided by

What is the total number of cells present in a 12-volt battery?

Which of the following drives is suitable for mines where explosive gas exists?

The major disadvantage of carbon arc welding is that

In electric welding, arc blow can be avoided by

Static UPS requires

The return circuit for tram cars is through

Which is the material used to as anode in a lithium-ion battery?

In a steam locomotive electric power is provided through

Earthing is necessary to give protection against

In India diesel locomotives are manufactured at

The horsepower of steam locomotives is

For which of the following locomotives the maintenance requirements are the least?

In case of---------free running and coasting periods are generally long.

Skidding of a vehicle always occurs when

No discontinuity is observed in case of

In tramways which of the following motors is used?

Longer coasting period for a train results in

Which of the following has the highest value of thermal conductivity?

Lighting and Refrigeration Systems

HVAC and Heating Systems: Understanding Compressors, Cooling Towers, Filters, and Heat Transfer Methods

Understanding Grounding and Earthing in Electrical Systems

Filters