An installer can work 63⁄4 hours each day at a worksite. The installer will need303⁄8 hours to do a complete installation of a heating and cooling system.How many days will the installer be at the job site?

7. One precaution that needs to be followed in a work area displaying the sign shown above: A. avoid using solvents. B. wear a leather apron. C. wear rubber gloves. D. prohibit welding. 8. A length of copper pipe measures 15.3 m. According to a job's specifications, the pipe needs to be cut into 3.2-m-long pieces. How many 3.2-m-long pieces of pipe can be cut from the original 15.3-m-long copper pipe? A. one B. two C. three D. four 9. You observe a worker emptying used degreaser cleaning fl uid into the sink in a workshop. What should you do? A. Notify your immediate supervisor of the hazard the next day. B. Refer the worker to the company policy manual. C. Advise the worker that it is an occupational health and safety hazard. D. Ignore the situation as there is nothing wrong with this disposal method.

S JETRA:30MINS La Explain what a workshop is; stating its importance and the types of risk that are associated with workshop use. b) Discuss workshops policies, procedures and responsibilities. c) Write on any 3 of the following aspects of safety that are adhered to in a workshop. i. General safety ii. Welding precaution. iii. Safe on machines iv. Safety on workbench. v. Safety for electrical works. vi. Personal safety A 2. a) Ide 32

2.5 please help

: The output of a certain machine can be increased if it undergoes a major overhaul now and it will           result additional cash flow of $ 20,000 at the end of each year for “N”  years. If  i = 15 % per year,           how much can we afford to invest to overhaul this machine?

Question 3 a) The details of travel time and capacity of different links in a portion of a city road network is as given in Table 1. Assign a traffic volume of 15,000 pcu per hr from node A to node I by multiple route assignment technique. Table 1: Travel time and capacity Link Travel time in minutes Practical capacity in pcu/hr A-B 6000 A-C 5000 A-D 5000 B-F 6000 C-E 5000 D-G 5000 E-H 5000 F-I 6000 G-H 5000 H-I 10000 wwNN 2 2 3 3 3 2 N33 N 2 2

: Q2: Choose the correct letter that represents the correct answer and choose ten only. 1- Minor losses occur in the following circumstances----- a). Long pipe. b) Exit from a pipe into a tank. c) Short pipe 2- Minor losses occur in the following circumstances----- a). Opened pipe b) Entry to a pipe from a tank c) Closed in pipe 3- Minor losses occur in the following circumstances----- a). Sudden enlargement in a pipe. b) Entrance from all directions c) surface roughness 4- Minor losses occur in the following circumstances----- a). dynamic viscosity b) Sudden contraction in a pipe. c) Solution of pipe flow. 5- Minor losses occur in the following circumstances----- a). Head pipe b) Loss of pressure c) Bends in a pipe. 6- Minor losses occur in the following circumstances--------- a). Pump delivering b) Any other source of restriction such as pipe fittings and valves. C) No energy loss. 7-Derivation of poiseuilles equation for laminar flow-------- a).Fs=1*2xr2Al b). Fs-t2nrAl c).…

A four cylinder four stroke diesel engine has a bore of 300mm and stroke length of 30 cm. Then the engine capacity in liters, approximately is a. 0.085 liters b. 850 liters c. 85000 liters d. 85 liters

a) Refer to figure 13.11 to compare the walking speeds of different animals b) Describe how you ‘pump’ your legs on a swing to make the swing go higher. Can you pump your legs at any frequency?