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Statement 1: Bucket conveyors can be divided into close and spaced bucket conveyors. Statement 2: Bucket conveyors can be divided into centrifugal and positive discharge bucket conveyors.
Statement 1: Belt conveyors cannot be used in the inclined position. Statement 2: Screw conveyors can carry more amount of load compared to belt conveyors.
A multiple-threaded screw is designed in such a way for one complete rotation of screw advances to a distance of 5 times the pitch of the screw. If need to make the lead only up to 3 times of the pitch of screw then how many angles should we rotate the screw?
A multiple-threaded screw has a pitch of screw 4mm and if the screw is made to 5 revolutions the screw will advances to 40 mm. What type of screw is it?
A bunker-conveyor system as shown in the figure works under the following scheme:
i. Bunker and two conveyors running
ii. Bunker and either of the two conveyors running
If the bunker and the two conveyors have identical reliability of 0.9. the system reliability is
Mine System Engineering mcq question image
A flange of radius 200mm is fastened to the machine screw by means of four cap screws of pitch circle radius 150mm. The external force P is 20kN which is loaded at 160mm from the machine screw. There are two dowel pins to take shear load. Determine the core diameter of cap screw if permissible tensile stress in cap screw is 40N/mm².
Statement 1: Belt and screw conveyors are in all processing units to transport the final packed cartons. Statement 2: The feeding in most processing units is done by screw feeders or mechanical/oscillatory feeders.
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as
A screw without the turnings can be approximated to be a combination of two cylinders. If the material used to make the screw weighs 4g per cm3, what is the weight of the screw given in the figure?
Two statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: All equipments are screw-drivers. All machines are equipments. Conclusions: I. Some screw-drivers are equipments. II. Some screw-drivers are machines. III. All equipments are machines.