When a porter governor is running at equilibrium speed the friction at the sleeve will be?

Answer. When a governor is running at constant speed, it is in equilibrium and the net force acting on the sleeve is zero. If the load on the engine changes, the speed also changes and hence, the sleeve of the governor changes its position.

When the sleeve of a porter governor moves upwards the governor speed and when the sleeve moves downwards the governor speed?

Explanation: When the sleeve of a porter governor moves upwards, the governor speed increases and when the sleeve moves downwards, the governor speed decreases.

What is the effect of friction on the functioning of a porter governor?

The effect of friction on the governor is to increase the range of speed, governor effort, and power of the governor.

What is equilibrium speed of governor?

Equilibrium speed :It is the speed at which governor balls,arms etc. are in complete equilibrium and the sleeve does not tend to move upwards or downwards. Mean equilibrium speed:It is the speed at the mean position of the balls or the sleeve.

What is the relation for speed of Porter governor?

The smaller the ratio more sensitive the governor will be So Sensitiveness = N2- N1/ N Where, N1 = Minimum equilibrium speed N2 = Maximum equilibrium speed N2 – N1 = Speed range from no load to full load.

Problem 3 on Porter governor with friction force at sleeve / Theory of machines

What are the effect of friction and of adding a central weight to the sleeve of a watt governor?

The force of friction always acts in a direction opposite to that of motion. Thus, when the sleeve move upward, the force of friction on sleeve acts downward. Similarly, when sleeve moves downward, the force of friction on sleeve acts upward.

When the speed of the governor decreases Which of the following effect does friction causes?

When the speed of the governor decreases, which of the following effect does friction causes? Explanation: In actual conditions there is always friction acting at joints and operating mechanisms of the governor, because of this while slowing down friction prevents the downward movement of sleeve. 2.

What is the relationship between sleeve position and speed of the governor which governor is more sensitive and why?

Explanation: The greater the lift of the sleeve corresponding to a given fractional change in speed, the greater is the sensitiveness of the governor.

What is a porter governor?

Porter governor is dead weight loaded type of gravity controlled centrifugal governor. It is similar to Watt governor with slight modification. When a heavy central load is attached to the sleeve of Watt governor, it becomes a porter governor. Read: Watt Governor – Construction and Working.

What is sleeve lift?

iii) Sleeve Lift: It is the vertical distance which the sleeve travels due to change in equilibrium speed.

How should the equilibrium speed vary with the increase of radius of rotation of the governor balls for stability?

Radius of rotation of balls increases as the equilibrium speed increased. Radius of rotation of balls decreases as the equilibrium speed increases.

What is the effect of increase in speed of governor on the height of governor and radius of rotation?

Question 58 : When the speed of governor increases

Option-4 : height of governor increases but radius of rotation decreases.

How does the governor maintains speed?

governor, in technology, device that automatically maintains the rotary speed of an engine or other prime mover within reasonably close limits regardless of the load. A typical governor regulates an engine's speed by varying the rate at which fuel is furnished to it.

When the sleeve of a Watt governor move upward the throttle valve *?

When the sleeve is increased closed the throttle valve. The supply of working fule is reduced then engine speed reduced so, answer C is correct. The length of sleeve decreases with increases the speed of governor, therefore the height of the sleeve is inversely proportional to the speed of the governor (i.e H=1/we).

Which of the following is a pendulum type governor Watt's governor Porter governor Hartnell governor none of the mentioned?

A pendulum type governor is a Watt governor. Explanation: A Hartnell governor is a spring loaded governor. Watt's governor is a pendulum type governor. Explanation: A Hartnell governor is a spring loaded governor.

What is the theoretical correlation between speed and height of the governor?

The height of the governor is inversely proportional to the square of the speed.

What is the characteristic of Porter governor?

A Porter governor has equal arms each 250 mm long and pivoted on the axis of rotation. Each ball has a mass of 5 kg and the mass of the central load on the sleeve is 15 kg. The radius of rotation of the ball is 150 mm when the governor begins to lift and 200 mm when the governor is at maximum speed.

Why is Porter governor considered as modification of what governor?

The Porter governor is a modification of a Watt's governor, with central load attached to the sleeve.

How does a porter governor differ from Watt governor?

Watt governor does not carry dead weight at the sleeve. Porter governor and proell governor have heavy dead weight at the sleeve. In porter governor balls are placed at the junction of upper and lower arms. In case of proell governor the balls are placed at the extension of lower arms.

How should the equilibrium speed vary with the increase of radius?

For a stable governor, if the equilibrium speed increases, the radius of governor balls must also increase. Explanation: For a stable governor: the radius of governor balls increases with increase in equilibrium speed, a governor is said to be unstable if the radius of rotation decreases with increase in speed.

Which one of the following governors is having a larger displacement of sleeve for a given fractional change of speed?

Sensitive Governor: If a governor is having a larger displacement of sleeve for a given fractional change of speed then it is known as sensitive governor.

What is the function of governor to stop the engine to increase the speed regulate the speed when load is fluctuating to change the load of engine?

A governor is a system that is used to maintain the mean speed of an engine, within certain limits, under fluctuating load conditions. It does this by regulating and controlling the amount of fuel supplied to the engine.

What is the function of governor Option 1 to decrease the speed option 2 to increase the speed option 3 None of these option 4 to regulate the speed?

Explanation: Governor: The function of a governor is to regulate the mean speed of an engine when there is a variation in the load. When the load on an engine increases, its speed decreases, therefore it becomes necessary to increase the supply of working fluid.

What is the condition for stability for a porter governor?

Clarification: In order to achieve stability in a porter governor, the equilibrium speed must increase with the increase of radius of rotation of the governor balls.

When the load on the engine increases the engine speed and if the governor is very sensitive the governor sleeve moves to?

If load on the engine increases the engine speed tends to reduce, as a result of which governor balls move inwards. This causes sleeve to move downwards and this movement is transmitted to the valve through linkages to increase the opening and, thereby, to increase the supply.