Other Engineering Answers

A horizontal venturimeter with an inlet diameter of 20 cm and throat diameter of 10 cm is used to measure the flow of water. The pressure at the inlet is 14. 715 N/cm^ 2 and vacuum pressure at the throat is 40 cm of mercury. Find the discharge of water through venturimeter.

An oil of sp. gr 0.9 is flowing through a venturimeter having an inlet diameter of 20 cm and a throat diameter of 10 cm. The oil-mercury differential manometer shows a reading of 20 cm. Calculate the discharge of oil through the horizontal venturimeter. Take Cd = 0.98.

The water is flowing through a taper pipe of length 50 m having diameters 40 cm at the upper end and 20 cm at the lower end, at the rate of 60 litres/s. The pipe has a slope of 1 in 40. Find the pressure at the lower end if the pressure at the higher level is 24.525 N/cm²

The water is flowing through a pipe having diameters of 20 cm and 15 cm at sections 1 and 2 respectively, The rate of flow through the pipe is 40 litres/s. Section 1 is 6 m above the datum line and section 2 is 3 above the datum. If the pressure at section 1 is 29.43 N/cm", find the intensity of pressure at section 2.

Water is flowing through a pipe of 100 mm diameter under a pressure of 19.62 N/cm^ 2 (gauge) and with a mean velocity of 3.0 m/s. Find the total head of the water at a cross-section, which is 8 m above the datum line.

How can Calculus be applied in Building Maintenance?

Design a fixed area internal compression inlet that will start at M0 = 2.9 for an aircraft that will cruise at Mach number of 2.4, Determine the

following Capture to throat area ratio AC / A t . Determine efficiency of the inlet after starting at M0 = 2.9 and the shock located at the throat.

Determine efficiency of the inlet after starting at M0 = 2.4 and the shock located at the throat. Determine the Mach number at which the inlet will

un-start.

An axial compressor stage has a mean diameter of 70cm and run at 14000 rpm. If the actual temperature rise and pressure ratio developed are 30°C and 1.4 respectively, determine

(i) the power required to drive the compressor while delivering 57 kg/s of air, assume mechanical efficiency of 86% and an initial temperature of 35°C. (6)

(ii) the stage load coefficient (3)

(iii) the stage efficiency and (3)

(iv) the degree of reaction if the temperature at the rotor exit is 55°C

The system will determine the speed depending ambient temperature. The display should show the current temperature and fan speed. Design a Subsystems where the switchedmode power supply Unit (Analog): This will supply the required DC power for all sub-systems. • • Input: 20 +/- 4 VDC (i.e. 16v <= input voltage <= 24v DC) Output : 5VDC @ 500mA max. • No more than 10% change in voltage over entire range of input voltage and load conditions. The power supply must be REGULATED, ie. the voltage maintained without human intervention. Ripple output voltage of 10% means 4.5v <= output voltage <= 5.5v DC @ 0.5A or 500mA max. • Min. 80% efficiency at full load. • Variable voltage mode: adjust from 0 to 5V. • Short circuit/overcurrent protection. • No SMPS “on-a-chip” solutions. Build from first principles.

Explain why software testing should always be an incremental, staged activity. Are programmers the best

people to test the programs that they have developed?