In railways a triangle is mainly provided for

 

(A) changing direction of engines through 180°

 

(B) diverting trains from the main line to branch line

 

(C) shunting wagons in yards

 

(D) crossing over between parallel tracks

Ordinary rails are made of

(A) mild steel

(B) high carbon steel

(C) wrought iron

(D) cast iron

The normal size of ballast used for points and crossing is

(A) 10 mm

(B) 25 mm

(C) 40 mm

(D) 50 mm

Ends of steel sleepers are

(A) flat and rectangular

(B) convex shaped

(C) concave shaped

(D) bulb shaped

The signals in the form of circular discs with red bands on while background are

(A) warner signals

(B) shunting signals

(C) starter signals

(D) stop signals

30 m long rails are used in

(A) Russia

(B) U.K.

(C) India

(D) U.S.A

Wings rails are provided

(A) in crossing

(B) near stock rails

(C) near tongue rails

(D) near check rails

When the rail ends rest on a joint sleeper, the joint is termed as

(A) bridge joint

(B) base joint

(C) suspended rail joint

(D) supported rail joint

Loose jaws of steel sleepers are made of

(A) spring steel

(B) cast iron

(C) mild steel

(D) cast steel

Wear of rails is maximum in

(A) coastal area

(B) tunnels

(C) sharp curve

(D) tangent track

In emergencies the system of train operation is

(A) pilot guard system

(B) one engine system

(C) time interval system

(D) space interval system