Details

DGMS EXAM FMR- MACHINERY DEC 2021

1) Auto dipping system installed on dumper operates

a) During tipping operation

b) During loading operation

c) Providing alarm during emergency

d) When approaching another dumper during cross over

e) Safety device

2) Connecting rod is attached to the piston by the

a) Rod cap

b) Piston pin

c) Cap boll

d) Lower cap

e) Cap roller bearing

3) In a automobile engine the temperature of the piston will be more at

a) The crown of the piston

b) The skirt of the piston

c) The piston walls

d) The piston pin

e) The piston ring

4) Main constituents of brass is

a) Copper, lead

b) Copper, tin

c) Tin, zinc

d) Copper, zinc

e) Lead, zinc

5) Frequency of vibration is usually expressed in

a) Number of cycles per hour 

b) Number of cycles per minute

c) Number of cycles per second

d) All of these

e) None

6) What tentative piloting pressure in a 60 T hydraulic excavator

a) 35 – 40 bar

b) 60 – 70 bar

c) 75 – 80 bar

d) > 100 bars

e) 150 – 200 bars

7) Which safety feature is not compulsory for installation in track mounted drills

a) Approved type of dust prevention or suppression system

b) Proximity sensor

c) Seal ball 

d) Turbo charge guard

e) None of these

8) The thermostat is normally positioned in the cooling system between the

a) Header hose and radiator

b) Radiator and bottom hose

c) Bottom hose and engine water jacket

d) Engine water jacket and header hose

e) None of these

9) Which of the following conveyor system has greatest ability to curve horizontally as well as vertically?

a) Sandwich conveyor 

b) Pipe conveyor 

c) Flexo wall conveyor

d) Pocket lift conveyor

e) Snake conveyor

10) Tall gate protection is provided in which opencast mining machineries

a) Dumper 

b) Dragline

c) Shovel

d) Surface miner

e) Dozer

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