Engineering Answers

A rigid vessel of volume 1m^3

You are hired by someone to design a charger circuit for his cell phone. Design a cell

phone charger cell phone requires exactly 5V and 2A for one hour

to be completely charged. charging circuit by only using the components listed in Table 1. For circuit design and calculations

purposes, the cell phone can be treated as resistor. Use the symbol of rectangle to show the cell phone in

your circuit.

table 1

Equipment Value Quantity

Resistor 500Ω 15

Capacitor 0.2 F 15

Switch SPST 15

Bulb 2.5W, 0.5A 15

Voltage Sources 1.5V 2

Use the following questions discussion Exposure Monitoring Sampling

Strategy:

●      Which employee or employees are to be sampled?

●      Where should the sampling device be located in relation to the employee sampled?

●      How many samples should be taken on each workday sampled to define an employee’s exposure?

●      How long should the sampling interval be for a measurement sample?

●      What periods during the workday should the employee’s exposure is sampled?

●      How many workdays during a year should be sampled, and when?

Based on the discussion:

●Provide    a      proposal

 On Exposure

Monitoring   Sampling      Strategy

 for

your

organisation.

●Draw a flowchart sampling strategy.

to

illustrate the

A particle P is moving along a straight line AB with its initial velocity 3 m/sec when

started from point A and with acceleration of 1.5 m/sec 2 . Another particle Q starts from

point A with velocity of 11.4 m/sec and acceleration of 1.2 m/sec 2 , 3 seconds after P has

left the point A. (a) determine the distance from point A when Q will overtake P, (b)

Further show that once Q will overtake P, Q will never be ahead of P by more than 9.6

m.

find the area bounded by y2=4x and y+2x=12

importance of using electrical resistance glove