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| Pass Year Questions; April 2008 | |
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| Tweet Topic Started: Oct 15 2009, 04:41 PM (145 Views) | |
| John - Admin | Oct 15 2009, 04:41 PM Post #1 |
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Question 1 a) Define the following terms used in hospitality industry: i) Hospitality maintenance and engineering ii) Preventive maintenance (4marks) List FOUR factor to be given attention when evaluating the effectiveness of the management of the engineering-and-maintenance units. (2marks)c) List FOUR criteria that may be considered by a hospitality manager when evaluating a computer system. (2marks) d) Explain why life safety system should be given full attention in the hospitality industry. (3marks) e) Differentiate between wet-pipe and dry-pipe sprinkler systems. (4marks) f) In the event of a fire, a hospitality manager used dry chemical as a fire suppression agent in installations that had electric relays and contacts. Do you think that he made the right move in extinguishing the fire? Justify your answer(2marks) g) Discuss the following security systems applied in hospitality industry: i) Redtricted access ii) Key control (8marks) [Total: 25marks] Question 2 a) Compare the boiling point of water on low-lying land and that on a mountain. Justify your ansswer. (2marks) If the thermal conductivity of a 0.5-inch material is 1.0, what is the total thermal conductivity of 2.0 inches if the same material? Explain your answer. (2marks)c) Name THREE methods of heat transfer. How do you differentiate them? (4marks) d) Sketch a diagram to show the vapor compression refrigerator cycle. (2marks) e) Describe FOUR properties of halocarbon refrigerator used with vapor compression refrigeration cycle. (2marks) f) In some foodservice operations, it may neccessary to keep the door of the chiller or freezer open for extended periods; for example, when there is excessive traffic into and out of the walk-in. In these situations, the ciller and the freezer are subjected to a continuous convective-heat gain. Suggest and illustrate ONE technique to overcome the problem (2marks) g) Mention TWO applications of the computer-controlled energy-management system (EMS) for a property's refrigerator system. (2marks) h) List SIX colling heat load factors. (3marks) i) State the function(s) and the temperatre effects of the following components of an air-conditioning system: 1) Pre-heater 2) Dehumidifier 3) Damper (6marks) [Total: 25marks] Question 3 a) Differentiate between direct and alternating current (2marks) b ) The National Electricity Board (Tenaga Nasional Berhad) calculates the electric bill according to the reading of the kilowatt-hour meter. TABLE 3.1 shows the meter readings in a hotel. TABLE 3.1 Reading in March = 17,145 units Reading in April = 38,900 units i) Compute the electric bill consumption of the hotel with the aid of the tariff presented in TABLE 3.2 (3marks) TABLE 3.2 The first 10,000 units RM0.218 The subsequent 8,000 units RM0.257 Additional units RM0.289 ii) Name TWO other possible surcharges that may impose additional charges to the lectric bill of the hotel (2marks) c) TABLE 3.3 shows a comparison between a compact fluorescent bulb and an incandescent bulb. These two bulbs give out the same amouth of light. TABLE 3.3 ![]() i) Briefly discuss how the compact fluorescent and incandescent bulbs work. (5marks) ii) Which bulb has a higher lightning efficiency? Why? (2marks) iii) Assume that the cost of electricity is RM 0.25 per unit kilowatt-hour. From the data given in TABLE 3.3, show which bulb costs in the long run. (5marks) d) Suggest THREE methods in improving the ventilation system in a kitchen (3marks) e) A smoke-free environment is not established by banning smoking one day and calling the environment smoke free the next day. Propose THREE approaches in converting a smoking room to a smoke-free room. (3marks) [Total: 25marks] Question 4 a) Draw a cable-car elevator system and name its main components. (5marks) b ) For a food service department. Sales/month: RM200,000 Energy cost: RM6000/month Goal is to reduce energy cost the following month: to improve by at least 0.5% For following month. New sales: RM140,000/month New energy cost: RM3300/month Has the goal been achieved? Explain (5marks) c) Give FIVE measures in security in the hotel can be enhanced. (5marks) d) Draw a central ventilation system for FOUR rooms. (5marks) e) Name FIVE different areas in which maintenance service is required. (5marks) [Total: 25marks] |
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List FOUR factor to be given attention when evaluating the effectiveness of the management of the engineering-and-maintenance units. (2marks)



