31. Automatic signalling is used for which of the following trains ? A. Mail and express trains B. Superfast trains C. Suburban and Urban electric trains D. All trains Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
32. Which of the following is the voltage for single phase A.C. system? A. 22 V B. 440 V C. 5 kV D. 15 kV Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
33. _________ frequency is not common in low frequency traction system A. 40 Hz B. 25 Hz C. 16 Hz D. None of these Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
34. Which of the following happens in Kando system? 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 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
35. The coasting retardation is around A. 0.16 km phps B. 1.6 km phps C. 16 km phps D. 40 km phps Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
36. Due to which of the following coefficient of adhesion improves? A. Rust on the rails B. Dust on the rails C. Sand on the rails D. All of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
37. Tractive effort is required to A. Overcome the gravity component of train mass B. Overcome friction, windage and curve resistance C. Accelerate the train mass D. Do all of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
38. Automatic signaling is used for which of the following trains? A. Mail and express trains B. Superfast trains C. Suburban and Urban electric trains D. All trains Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
39. In case of steam engines the steam pressure is A. 1 to 4 kgf/cm2 B. 5 to 8 kgf/cm2 C. 10 to 15 kgf/cm2 D. 25 to 35 kgf/cm2 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
40. The resistance encountered by a train in motion is on account of A. Resistance offered by air B. Friction at the track C. Friction at various parts of the rolling stock D. All of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
