Consider the following statements for a power shovel?

(i) Output can be increased by reducing the angle of swing for a given depth of cut
(ii) For a given angle of swing, output will be maximum at optimum depth of cut
(iii) Output can be increased by keeping the depth of cut less than optimum depth
(iv) Output can be increased by increasing the size of shovel
select the correct statements?

A. (ii), (iii) and (iv) are correct
B. (i), (ii) and (iv) are correct
C. (i), (iii) and (iv) are correct
D. (i) and (iv) are correct

Related Mcqs:

For which of the following materials, the output of power shovels for a fixed shovel size will be maximum_______________?
A. Moist loam
B. Good common earth
C. We|l blasted rock
D. Wet sticky clay
Assertion A: For a given depth of cut, the output of a power shovel can be increased by decreasing the angle of swing Reason R: If the angle of swing is decreased, the cycle time will be decreased_______________?
A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true
A tractor shovel has a purchase price of Rs. 4.7 lacs and could save the organization an amount of rupees one lac per year on operating costs. The salvage value after the amortization period is 10% of the purchase price. The capital recovery period will be________________?
A. 3.7 years
B. 4.23 years
C. 5 years
D. 7.87 years
Which of the following is a weakness of bar chart ?
A. interdependencies of activities
B. project progress
C. uncertainties
D. all of the above
Which of the following is not a PERT event ?
A. site investigation started
B. sessional work completed
C. bus starts from Jaipur
D. class is being attended
Which of the following does not represent an activity?
A. site located
B. foundation is being dug
C. the office area is being cleaned
D. the invitations are being sent
Which of the following excavators is most suitable for digging under water?
A. Drag line
B. Hoe
C. Clam shell
D. Dipper shovel
Which one of the following is not an excavating and moving type of equipment ?
A. Bulldozer
B. Clam shell
C. Scraper
D. Dump truck
Which one of the following surfaces will give highest coefficient of traction while using crawler track tractors?
A. Ice
B. Concrete
C. Loose sand
D. Earth
Which of the following earth moving machines has the shortest cycle time?
A. Drag line
B. Hoe
C. Clam shell
D. Dipper shovel