Worksheets1. Introduction to Railway Electrification Works
Total questions: 15
Worksheet time: 8mins
Tramway type OHE can be used for
Main Line
Siding Line
Wiring of Turnouts
All the above
Length of the current collector shoe is 500 mm.
False
True
While moving RRCS, the audible alarm sound will be furnished.
False
True
What is the function of the Transition Bar in ROCS?
To support the cantilever
To connect ROCS with FOCS
To reduce voltage drop
To clamp insulators
The contact wire in ROCS is tensioned mechanically.
False
True
Mid-point anchor is used to control expansion and contraction forces.
True
False
RRCS can be operated only when the system is
Energized
De-energized
Under load
Grounded
Droppers are used for
Leveling the contact wire
To maintain stagger
Reducing the sag in catenary wire
None of the above
Minimum working clearance (danger zone) for 25 kV AC is 2 m
True
False
From the track center to the third rail, the horizontal distance is ______
3000mm
1350mm
1480mm
2000mm
Height of the contact wire in a 2x25 kV system high-rise OHE (DFCC) is
7.54 m
5.80 m
5.20 m
7.00 m
Both copper-made catenary and contact wires are used in
Conventional OHE
Tramway OHE
Composite OHE
None of the above
A tension length is
Stretched between three anchor points
Stretched between four anchor points
Stretched at one anchor point
Stretched between two anchor points
OHE becomes regulated by providing the following anchors:
BWA – BWA
FTA – FTA
FA - FA
RCA – RCA
A 25 kV traction system needs the supply of
Single Phase
Two Phase
Three Phase
Three Phase & neutral wire
