Electric Traction Which of the following methods is used to control speed of 25 kV, 50 Hz single phase traction? All of the listed here Reduced current method Series parallel operation of motors Tap changing control of transformer All of the listed here Reduced current method Series parallel operation of motors Tap changing control of transformer ANSWER DOWNLOAD EXAMIANS APP
Electric Traction In case of ___________ free running and coasting periods are generally long. All of the listed here Mainline service Suburban service Urban service All of the listed here Mainline service Suburban service Urban service ANSWER DOWNLOAD EXAMIANS APP
Electric Traction The efficiency of diesel locomotives is nearly 30 to 40 percent 45 to 55 percent 20 to 25 percent 60 to 70 percent 30 to 40 percent 45 to 55 percent 20 to 25 percent 60 to 70 percent ANSWER DOWNLOAD EXAMIANS APP
Electric Traction In tram ways which of the following motors is used? D.C. series motor AC. single phase capacitor start motor A.C. three phase motor D.C. shunt motor D.C. series motor AC. single phase capacitor start motor A.C. three phase motor D.C. shunt motor ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Coefficient of adhesion reduces due to the presence of which of the following? Dew on rails Oil on the rails Sand on rails Both Dew on rails and Oil on the rails Dew on rails Oil on the rails Sand on rails Both Dew on rails and Oil on the rails ANSWER DOWNLOAD EXAMIANS APP
Electric Traction Suri transmission is Hydro pneumatic Hydro mechanical Electrical pneumatic Mechanical electrical Hydro pneumatic Hydro mechanical Electrical pneumatic Mechanical electrical ANSWER DOWNLOAD EXAMIANS APP
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