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Project plan. Project Overview . Name : Md. Nazrul Islam Laskar Institution : PDB High school,Sylhet Learning area : Physics Class : Nine – Ten Class duration : 40 minutes. Objectives : They would able to say meaning of the heat engine.
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Project Overview Name : Md. Nazrul Islam Laskar Institution : PDB High school,Sylhet Learning area : Physics Class : Nine – Ten Class duration: 40 minutes Objectives : • They would able to say meaning of the heat engine. • They would able to say classification of heat engine. • They would able to describe the heat engine with image.
Aero plane Train Car Aero plane Engine Car Engine Train Engine What are these engines called?
Thermal Machine Chapter : Twelve Page No. : 169
individual work Intake Compression Power Exhaust Time: 6 min. See the picture animation 1 minute, then silently read your text book page 170-171 (point 12.2)
Group work Figure: a Figure: b 5 min. Each group will match them with others. Write them in the board (one student from each group) 6 min. Write some differences between Figure - a and b 2 min.
Assessment Q: See this picture and write answer to the following question. Time : 1:46 1:47 1:48 1:49 1:50 1:51 1:52 1:53 1:54 1:55 1:56 1:28 1:45 1:44 1:57 1:42 1:43 1:31 1:32 1:33 1:34 1:35 1:30 1:37 1:38 1:39 1:40 1:36 1:29 1:14 1:41 1:26 1:27 1:25 1:24 1:23 1:22 1:21 1:20 1:19 1:18 1:17 1:16 1:15 1:13 1:12 1:58 1:10 1:11 1:59 2:00 1:00 1:01 1:03 1:02 1:05 1:06 1:07 1:08 1:09 1:04 0:48 0:46 0:47 0:49 0:55 0:51 0:52 0:53 0:54 0:29 0:56 0:50 0:45 0:38 0:42 0:41 0:40 0:39 0:37 0:36 0:35 0:34 0:33 0:32 0:31 0:57 0:44 0:43 0:30 0:11 0:28 0:59 0:16 0:17 0:18 0:26 0:19 0:22 0:21 0:23 0:24 0:25 0:15 0:20 0:58 0:14 0:12 0:10 0:09 0:08 0:06 0:05 0:04 0:03 0:02 0:01 End 0:27 0:13 0:07 (a) What is the name of the machine? (b) Write the words that the alphabet stands for?
Match the answer: Time: 2 min. (b) Level diagram of this Petrol engine: (a) The name of this machine is Petrol engine. T = Petrol tank R = Float chamber V 1 &V2 = Valve I = Intake Valve E = Exhaust valve D = Combustion chamber C = Cylinder J = Carburetor P= Piston H = Main shaft
Home Work Sours of heat of higher temperature (1000j) Heat transformed into mechanical energy Heat engine (600 j ) Receiver of heat at lower temperature Time: 4 min. What is heat engine? (b) What do you mean by “ The efficiency of petrol engine is 30% .” (c) What is the efficiency of the petrol engine shown in figure? (d) Describe with diagram the arrangement within the engine by which heat can be used for practical purpose ?