Category: Electric Traction

A. easy speed control
B. high starting tractive effort
C. equipment capable of with standing large temporary loads
D. all of the above

A. Steam locomotives
B. Diesel locomotives
C. Electric locomotives
D. Equal in all of the above

A. 20 to 25 percent
B. 30 to 40 percent
C. 45 to 55 percent
D. 60 to 70 percent

A. Three phase A.C. is converted into D.C.
B. Single phase A.C. is converted into D.C.
C. Single phase supply is converted into three phase system
D. None of the above

A. single acting condensing type
B. single acting non-condensing type
E. double acting condensing type
D. double acting non-condensing type

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

A. Sand on rails
B. Dew on rails
C. Oil on the rails
D. both B. and C.

A. 5
B. 10
C. 14
D. 17

A. Jolting and skidding
B. Hammer blow
C. Pitching
D. All of the above

A. Cascade control
B. Pole changing
C. Rheostat control
D. Combination of cascade and pole changing