Title: Sustainable analysis for urban water management The aim of the research is to build sustainable urban water for future. The research look into methodologies and strategies to address different risk and hazards to mitigate flood events as well as

## With the aid of a graph show how the indicated power and brake power vary with the engine speed for a variable speed engine and explain the general shape of the graph. ii) State any FOUR advantages of super charging of an internal combustion engine

a) Show that the diagram efficiency, ?_d, of an impulse turbine is given by: ?_d=4b/a_i (cos??a_i- b/a_i ? ) Where b=mean blade speed a_i=nozzle angle ai=absolute velocity of steam from nozzle. (7 marks) b) The following data applies to the

## how that the flow rate Q, of a fluid of dynamic viscosity ?, flowing under laminar conditions through a horizontal circular pipe of diameter ‘d’, length ‘L’, with a mean velocity V, when the pressure difference between the ends is P, is given by the expression: Q=(ppd^4)/128?L Hence show that the pressure difference p can be given by the expression P=32?lv/d^2 (121/2 marks)

Answer any ONE question from this section. a) Explain the following terms: Geometrical similarity Dynamic similarity (3 marks) b) Show from the first principles the requirements for dynamic similarity between two fluid motions when considering: Viscous resistance Wave resistance (6

## Define the following terms with reference to fluid flow: Critical velocity Reynold’s number

Answer any ONE question from this section. a) Explain the following terms: Geometrical similarity Dynamic similarity (3 marks) b) Show from the first principles the requirements for dynamic similarity between two fluid motions when considering: Viscous resistance Wave resistance (6

## The air resistance R of a supersonic plane during flight, is a function of its length L, velocity V, air dynamic velocity µ, air density ?, and bulk modulus K. Show that the air resistance R is given by: R=pl^2 V^2Ø{µ/pvl ,k/(pv^2 )} where Ø means a “function of”

Answer any ONE question from this section. a) Explain the following terms: Geometrical similarity Dynamic similarity (3 marks) b) Show from the first principles the requirements for dynamic similarity between two fluid motions when considering: Viscous resistance Wave resistance (6

## Show from the first principles the requirements for dynamic similarity between two fluid motions when considering: Viscous resistance Wave resistance

## State FOUR advantages of worm and worm wheel final drive over crown wheel and pinion type

1) a) State FOUR advantages of worm and worm wheel final drive over crown wheel and pinion type. (4 marks) b) With the aid of a diagram, explain the operation of a two speed final drive unit used in some

## With the aid of a diagram, explain the operation of a two speed final drive unit used in some vehicles.

1) a) State FOUR advantages of worm and worm wheel final drive over crown wheel and pinion type. (4 marks) b) With the aid of a diagram, explain the operation of a two speed final drive unit used in some

## List any FOUR requirements of a brake servo unit fitted in a motor vehicle

1) a) State FOUR advantages of worm and worm wheel final drive over crown wheel and pinion type. (4 marks) b) With the aid of a diagram, explain the operation of a two speed final drive unit used in some