Related Questions

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.
A dragline is required to remove 3,00,000 m3 of rock per month on the bank volume basis. Consider the following data for the dragline operation.
Effective working hours per month = 450
Bucket fill factor = 0.8
Cycle time = 65 s
Swell factor of the rock = 1.25
The minimum bucket capacity of the dragline in m3 is
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.
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.
In the given figure a metallic plate A is allowed to swing like a simple pendulum between the magnetic poles and it comes to rest after time t. If a slot is cut in the plate A and then it is allowed to swing with the same initial velocity as before then the time taken by it to come to rest will be:
Last year, there were three sections in a competitive exam. Out of them 33 students cleared the cut-off in Section A, 34 students cleared the cut-off in Section B and 32 students cleared the cut-off in Section C. 10 students cleared the cut-off in section A and section B, 9 cleared the cut-off in section B and section C and 8 cleared the cut-off in section A and section C. The number of students who cleared only one section was equal and was 21 for each section. How many students cleared all the three sections?
Consider the following statements about CMOS: 1. CMOS logic inverter has a maximum signal swing of 0 V to VDD. 2. The output signal swing is independent of the exact value of aspect ratio and other device parameters. 3. It is a fast switching device with wide noise margins. 4. It has zero input resistance and infinite output resistance. Which of these statements are correct?
The following data are provided for a surface mine to be excavated by a shovel:
Production target: 10000 te/shift
Available hours per shift: 6 hrs
Shovel loading cycles per hour: 106
Bank density of the material mined: 2400 kg/m3
Swing factor at 120° swing: 0.91
Bucket fill factor : 0.64
Utilization of available time: 83%
No of working days in a year : 300
No of shifts per day : 3

The size of bucket of the shovel in m3 is
For a given size of bucket, the ideal output of a dragline will be least in
A system provides output yi(t) when xi(t) is applied. If the system is said to be LTI then which of the following properties must satisfy? (i).If the input is x3 = ax1(t) + bx2(t), then output must be y3(t) = ay1(t) + by2(t) (ii).If the input is x(t – T), then the output must be y (t – T) (iii).If the input is x3 = ax1(t) + bx2(t), then output must be y3(t) = ay1(t) * by2(t) (iv).If the input is x(t – T), then the output must be y(t + T)