Engineering Answers

The mechanism, as shown in Fig. 3, has the dimensions of various links as follows: AB = DE

= 150 mm; BC = CD = 450 mm; EF = 375 mm. The crank AB makes an angle of 45° with the

horizontal and rotates about A in the clockwise direction at a uniform speed of 120 r.p.m. The

lever DC oscillates about the fixed-point D, which is connected to AB by the coupler BC. The

block F moves in the horizontal guides, being driven by the link EF. Determine: 1. velocity of

the block F, 2. angular velocity of DC, and 3. rubbing speed at the pin C which is 50 mm in

diameter.

The y-coordinate of a particle in curvilinear motion is given by y = 4t ^ 3 - 3t where y is in inches and t is in seconds. Also, the particle has an acceleration in the x-direction given by a x =12t in./sec^ 2 If the ve locity of the particle in the x-direction is 4 in./sec when t = 0 , calculate the magnitudes of the velocity v and acceleration a of the particle when t = 1 sec. Construct v and a in your solution.

The owner of a video store has contacted you to develop a system to keep track of videos and rentals. He feels that with the growing number of customers, such a system will greatly help in managing accounts and providing better customer service.

List the process model that you think will be most appropriate for the above situations. Also list your reasons for choosing the process mode.

p^2+q^2=z (quasilinear or non linear equation)

Determine the exact simple interest of 5,000 pesos for the period from jan. 15 to Nove. 28,1992, if the rate of interest is 22%

Discuss five technologies applied in water resources development and Environmental Management.

Air is used as a working substance in a given internal combustion engine, which is

supplied with heat at a constant volume. Based on the data, calculate the following:

1)Pressure and temperature of the ending of isentropic expansion.

2)Pressure rise rate

3)Thermal efficiency of the cycle

4)The work of the cycle

5.The average pressure of the cycle

Givens:

k=1.4

r=10

T 1 =285 K

T 3 =2274 K

p 1 =1.013 bar

v 1 =0.5 m 3 /kg

Determine the impulse response of the following IIR system:

y[n] + y[n - 1] = x[n] - 2x * [n - 1]

Determine the impulse response h of the following FIR system:

y[n] = x[n] + 1/2 x[n - 1] + 2x [n - 2] + 4x [n - 3] - x[n - 5]

Explain and justify how the existing technology can be used to improve one of the systems you chose for Task 1.  Specify in terms of electrical principles, how you suggested improvement work. 

This provides evidence for D2