Engineering Answers

the standard length of the tape was known to be 30.015 at 25 c and 50 N tensions whose normal length is 30m. the tap was is used to measure a base line suspending it between supports and the following measurement were recorded:-

measured length =92.441

elevation difference between the two extreme ends = 4.482m

mean temperature =23 degree C

Cross- sectional area of the tape 1.7mm squire

Tension applied =25 N

weight of the tape = 3.4N

calculate the corrected horizontal distance of the base line if young's modulus of the tape material is 2*100000N/mm squire AND THE coefficient of thermal expansion of the tape is 1.12*1000000/C degree so/N

The maximum actuating force on a double short shoe external drum brake illustrated in figure 1 below is 3 kN. If the coefficient of friction for the shoe lining is 0.3. 1.1 Determine the torque capacity of the brake for clockwise rotation of the drum. (11) Hint 1: Note the distance between the shoe and the pivot is not ignorable. Hint 2: Consider both shoes in your analysis. 1.2 Draw the forces acting on each shoe. 

(b)  

(a) Write down the equation for a sinusoidal voltage of 50 Hz and its peak value is 20 V. 

phase angle between voltage and current. 

(b) Find the impedance of a series RLC circuit if the inductive reactance, capacitive 

Draw the corresponding voltage versus time graph. [10 marks]

reactance and resistance are 184 Ω, 144 Ω and -j30 Ω respectively. Also calculate the 

(a) Write down the equation for a sinusoidal voltage of 50 Hz and its peak value is 20 V. 

phase angle between voltage and current. 

(b) Find the impedance of a series RLC circuit if the inductive reactance, capacitive

Draw the corresponding voltage versus time graph. [10 marks]

reactance and resistance are 184 Ω, 144 Ω and -j30 Ω respectively. Also calculate the

(a) Write down the equation for a sinusoidal voltage of 50 Hz and its peak value is 20 V.

phase angle between voltage and current.

A 10ft long horizontal through has ends in the shape of equilateral triangles. The sides of the triangle are 6ft in length. If water is being poured inside the through, find a mathematical model that expresses the volume of the water as a function of its depth

A beam AB of length 1 m is supported horizontally at A and B. A weight of 500 N is attached on the rod at C. If the support at A can not bear a pressure more than 300 N, find the distance of C from A, when the support A is about to fail.

. Write a script file that will prompt a student to enter his/her class mark of a subject and then examination mark. Calculate the final mark taking 30% and 70% from the class mark and examination marks respectively and display the information to the student as Final mark = … 

if the % increase in power required for a helicopter to hover at an altitude above sea level is 6% higher that required to hover at sea level with the same figure of merit, determine the altitude. assume that the density change is 8% per km.