DSSSB Work Assistant Paper 2015

DSSSB Work Assistant Paper 2015

Follwing materials required for making concrete
(a) Cement
(b) Aggregates
(c) Water
(d) All of the above

The moving part in centrifugal pump is
(a) Impeller
(b) Diffuser
(c) Both (a) and (b)
(d) Neither (a) nor (b)

List out the construction equipment below
(a) Bulldozer
(b) Backhoe
(c) Excavator
(d) All of the above

The type of material used for plastic floors is
(a) P.V.C
(b) Linoleum
(c) Asphalt
(d) Rubber

Name the equipment which is used to mix the ingredients of concrete in required proportion
(a) Hoppers
(b) Belt conveyors
(c) Mixers
(d) Dumpers

Name the equipment used for transporting and placing of concrete in big construction projects
(a) Mixers
(b) Belt conveyors
(c) Shovels
(d) Backhoe

Most commonly used type of drill bit is
(a) Screwdriver bit
(b) Countersunk bit
(c) Flat bit
(d) Twist bit

Use of coolant in drilling operation is
(a) To increase the heat
(b) To reduce the heat
(c) To reduce corrosion
(d) To increase corrosion

Worm gear pulley is also known as
(a) Screw gear pulley block
(b) Spur gear pulley block
(c) Differential pulley block
(d) Plain pulley block

The type of excavator is used for digging at or below the operating level
(a) Clamshell
(b) Dragline
(c) Bulldozer
(d) Dipper dredgers

The equipment which is self-propelled machine used mainly to exert a powerful tractive force for pulling other machines
(a) Tractor
(b) Excavator
(c) Buldozer
(d) Ropeway

Which of the following pump works on centrifugal action ?
(a) Reciprocating pump
(b) Submersible pump
(c) Centrifugal pump
(d) Jet pump

Shape of earthen dam is
(a) Triangular
(b) Rectangular
(c) Trapezoidal
(d) Circular

Which is the arragement made near top of dam for passage of excess water from the reservoir ?
(a) Sluice way
(b) Spillway
(c) Gallery
(d) Abutments

When a canal is carried over a natural drainage, the structure provided, is known as
(a) syphon
(b) aqueduct
(c) super passage
(d) None of these