Renewable Energy Engineering I Past Paper PDF, November 2024

TED (21) – 3293 Reg.No……………… ( REVISION – 2021) Signature……………. DIPLOMA EXAMINATION IN ENGINEERING/TECHNOLOGY/ MANAGEMENT/COMMERCIAL PRACTICE, NOVEMBER - 2024...

TED (21) – 3293 Reg.No……………… ( REVISION – 2021) Signature……………. DIPLOMA EXAMINATION IN ENGINEERING/TECHNOLOGY/ MANAGEMENT/COMMERCIAL PRACTICE, NOVEMBER - 2024 RENEWABLE ENERGY ENGINEERING I [Maximum Marks:75] [Time: 3 Hours] PART - A I. Answer all the following questions in one word or one sentence. Each question Carries ‘one’ marks. ( 9 x 1 = 9 Marks) Module Outcome Cognitive level 1 List any two disadvantages of solar energy. M1.01 R 2 Define a solar collector. M1.03 R 3 Give the purpose of using mirrors in a solar cooker. M2.01 R 4 The purpose of solar stills is to…………. M2.02 R 5 What does the word module refer to in a solar panel? M3.01 R 6 List the major components which are required for an on-grid PV M3.04 R installation. 7 State the purpose of inverter in PV systems. M4.01 R 8 The function of the DC to DC converter in PV systems is………… M4.03 R 9 List any applications of solar PV M4.04 R PART - B II. Answer any eight questions from the following. Each question carries ‘Three’ marks. ( 8 x 3 = 24 Marks) Module Outcome Cognitive level 1 Explain the Greenhouse Effect. M1.01 U 2 Explain the evacuated tube type collector. M1.03 U 3 Explain the theory behind sensible heat storage. M1.04 U 4 Explain the working of a natural circulation solar water heater. M2.01 U 5 Compare active and passive solar heating systems. M2.03 U 6 Draw the block diagram of hybrid PV systems. M2.03 U 7 A 100Ah capacity battery is discharges for 10 hours. Estimate the M4.02 A current that can be drawn from the battery. 8 Show the method of obtaining 450 Ah capacity by using 12 V lead M4.02 A acid batteries of 150Ah. 9 With the help of a diagram explain the working of a buck converter. M4.03 U 10 With the help of a block diagram, explain the working of a shunt M4.03 U type charge controller. Page 1 of 2  PART - C Answer all the questions from the following. Each question carries ‘seven’ marks. (6 x 7 = 42 Marks) Module Outcome Cognitive level III. Compare concentrating and Non-concentrating Type solar collectors. M1.03 U OR IV. Explain the Fresnel lens type concentrating collector with a suitable M1.03 U diagram. V. Explain the working of a solar crop dryer with a suitable diagram. M2.02 U OR VI. Explain the working of a medium temperature solar power plant with the help of a diagram. M2.04 U VII. With the help of a block diagram, explain the working of an M2.03 U absorption type space cooling. OR VIII. Explain the solar green houses, give their classifications. M2.02 U IX. Calculate the rating of the solar panel to be selected if we want to M3.03 A power up four lights of 40W and a fan of 100W which are being used for 4 hours everyday, assuming the sunshine is available for 4 hours. OR X. Draw the V I characteristics of a solar cell and define the terms M3.01 U related to it. XI. With the help of suitable block diagrams explain the working of a M4.03 U PWM charge controller. OR XII. Design the battery system for a voltage requirement of 24 V and a capacity of 900 Ah, the specifications of the available battery are M4.02 A voltage is 12V and capacity C of 150Ah. XIII. Explain the components of Balance of System(BOS). M4.01 U OR XIV. With the help of a block diagram explain the Solar PV application in water pumping. M4.04 U ********************* Page 2 of 2