List of top Farm Machinery Questions on Speed asked in GATE AG

An engine’s torque-speed characteristics is given below:
\[ T_{maxP} = 125 \, \text{N.m}, \, N_{maxP} = 2400 \, \text{rpm}, \, N_{HI} = 2600 \, \text{rpm}, \, T_{max} = 160 \, \text{N.m}, \, N_{maxT} = 1450 \, \text{rpm} \] Where:

The Governor’s regulation is _________% (Rounded off to 2 decimal places).

A stable drop structure is designed with a base length of 5.7 m. The sum of vertical forces excluding uplift is 92.5 kN, sum of uplift forces is 72.5 kN, and sum of moments of all the horizontal and vertical forces about an axis passing through mid-section of base length is 60 kN.m. The eccentricity denoting the longitudinal distance between the centroid of base area and the point of application of resultant vertical load is _________ m. (Rounded off to 2 decimal places)
A solid round uniform diameter shaft is transmitting 25 kW power at 540 rpm. The maximum allowable shear stress of the shaft material is 35 MPa. If the maximum torque exceeds the mean torque by 20%, neglecting the bending effect, the minimum shaft diameter is _________ mm. (Rounded off to 2 decimal places)
Considering acceleration due to gravity as 9.81 m.s\(^{-2}\) and \( \pi \) as 3.14, the critical speed of a ball mill having 3600 mm mill diameter and 160 mm ball diameter is _________ rpm. (Answer in integer)
A stable drop structure is designed with a base length of 5.7 m. The sum of vertical forces excluding uplift is 92.5 kN, sum of uplift forces is 72.5 kN, and sum of moments of all the horizontal and vertical forces about an axis passing through mid-section of base length is 60 kN.m. The eccentricity denoting the longitudinal distance between the centroid of base area and the point of application of resultant vertical load is _________ m. (Rounded off to 2 decimal places)
An engine’s torque-speed characteristics is given below:

\( T_{{\text{maxP}}} = 125 \, \text{N.m}, \, N_{{\text{maxP}}} = 2400 \, \text{rpm}, \, N_{{\text{HI}}} = 2600 \, \text{rpm}, \, T_{{\text{max}}} = 160 \, \text{N.m}, \, N_{{\text{maxT}}} = 1450 \, \text{rpm} \)

Where:

\( T_{{\text{maxP}}} = \text{torque at maximum power}, \quad T_{{\text{max}}} = \text{maximum torque}, \quad N_{{\text{maxP}}} = \text{speed at maximum power}, \quad N_{{\text{maxT}}} = \text{speed at maximum torque}, \quad N_{{\text{HI}}} = \text{speed at high idle}. \)

The Governor’s regulation is _________% (Rounded off to 2 decimal places).
Considering acceleration due to gravity as 9.81 m.s\(^{-2}\) and \( \pi \) as 3.14, the critical speed of a ball mill having 3600 mm mill diameter and 160 mm ball diameter is _________ rpm. (Answer in integer)
A solid round uniform diameter shaft is transmitting 25 kW power at 540 rpm. The maximum allowable shear stress of the shaft material is 35 MPa. If the maximum torque exceeds the mean torque by 20%, neglecting the bending effect, the minimum shaft diameter is _________ mm. (Rounded off to 2 decimal places)
In a thresher, the cylinder separation efficiency can be improved by increasing

A double-acting hydraulic cylinder has bore and rod diameters of 76 mm and 25 mm, respectively. In extension as well as retraction strokes of the cylinder, the oil flow rate to the cylinder from the pump is 40 L min$^{-1}$. The velocity of the piston during retraction stroke in m s$^{-1}$ is _____. \(\textit{[Round off to two decimal places.]}\)

The pressure drop through a well-designed constriction is to be used for measuring the velocity of flow through a circular pipe. If the pressure drop from a 0.1 m diameter section to a 0.05 m diameter section of the pipe is 7.5 kPa, the velocity in m/s in the 0.1 m diameter section of the pipe is __________. (Take density of liquid = 1000 kg/m³)
An open V-belt is wrapped around V-pulleys having effective diameters of 0.25 m and 0.65 m, and their centres are 1 m apart. Assuming ideal conditions, the wrap angle in degrees for the smaller pulley is _____. \textit{[Round off to two decimal places.]}
Annual cost of owning (fixed cost) a particular combine harvester is Rs. 3,00,000 whereas, operating it would cost additional Rs. 6,000 per hectare. If an entrepreneur wishes to offer the machine for custom hiring, the combination of annual use (ha) and custom rate (Rs. ha\(^{-1}\)), respectively, that would fetch him the break-even condition is __________.