OCS Final Assessment Dhaka Metro Client

The minimum working clearance in 1500V DC OCS is __________.

• 2M

• 1M

• 3M

• 4M

1500V DC Live metal to earth static clearance is ___________.

• 150 mm

• 200 mm

• 100 mm

• 250 mm

Which type of Cantilever?

• Push off

• Pull off

• Overlap Center

• Overlap Inter

   Insulators used in DMRT project is made up of

• Porcelain

• Composite

• Glass

• None of these

Identify the dimensions.

• L1, L2, L3

• L3, L4, L5

• H, M, L

• L1, L4, L5

What is the spacing distance of Hangers in throughout the span.

• 9 M

• Less than 5M

• Less than 10 M

• Less than 9 M

Cut in insulator is required at Section insulator and IOL locations

• False

• True

In DMRT project Pulley type balancer mechanical ratio is

• 1 : 3

• 1 : 4

• 1 : 5

• 1 : 2

What type of spring tension balancer is used for OCS contact wire.

• NS 400 -2

• NS 450 -2

• NS 250 - 2

• NS 150 -2

Cross section of Feeder/Messenger wire in Feeder Messenger System (FMS) is

• 350 Sq.mm

• 250 Sq.mm

• 356 Sq.mm

• 256 Sq.mm