महाराष्ट्र कृषि सेवा मुख्य परीक्षा २०१२

The Khadi Village Industries Commission (KVIC) biogas model is of which type ?

Which instrument is used to measure the direct and diffused radiation in terms of energy per unit time per unit area on horizontal surface ?

From what can biogas be produced ? 

(a) Cow dung

(b) Poultry droppings 

(c) Plant garbage 

(d) Flesh of carcasses

Fill in the blank correctly.  

Step-up transformer receives energy at one voltage and delivers it at a _________ voltage

What is a universal motor ?

What are the steps as per generally recognized strategy for site selection of wind mill installations ?

(a) Survey of historical wind data is done.

(b) Contour maps of terrain and wind are consulted. 

(c) Potential sites are instrumented for approximately one year.

(d) Optimal site is chosen.

How many fold increase in the available wind power will there be, if the diameter of a rotor of horizontal axis wind mill is doubled ?

Complete the sentence.

The surface azimuth angle (y) varies from __________ .

What is the calorific value of biogas in kcal per cubic meter ?

What is the range of voltage applied to the electrical fence ?

What for is a fuse provided for electric circuit? 

Fill in the blank.

In fixed dome type biogas plant, gas availability is at _________ pressure.

Which of the following is not a part of flat plate solar collectors ? 

India is having about 10 million motors with average rating of 3.7 kW. If the efficiency is increased from 80% to 90%, how much power will be saved per year, considering annual use of 1000 hrs ?

Wind mill operated piston pump is suitable for which form of irrigation ? 

(a) well 

(b) bore hole 

(c) dam  

(d) river

Fill in the blanks appropriately.

Wind speed _________ with height; at the height of 10 m was found to be _________ than that close to the ground.

Fill in the blank correctly. 

Methane bacteria work best at a temperature range of __________ for optimum biogas production.

Which of the following are the direct or indirect applications of solar energy ? 

(a) Solar water heating 

(b) Space cooling

(c) Wind energy

(d) Solar cooking

What is the major obstacle to increase the use of solar irrigation systems?

What is the relative requirement of the Savonius rotor machine due to which it has become popular, since operation ?