AGRO 3503, Unit I-5 Quiz (10 pts)  Print this out first to have handy as you go through the Unit I-5 lesson and the link below to find the solutions to these questions.


1. Most field losses of grain during harvest occur at the:

            A. threshing unit                                    B. combine header

            C. auger system                                    D. straw walkers


2. Which of these headers would be best for harvesting wheat that has been

     knocked down from storms?

            A. corn header                                     B. batter reel

            C. air reel                                             D. pick up reel


3. Rasp bar threshers remove grain using:

            A. centrifugal force                               B. friction

            C. kinetic force                         D. electricity


4. A header used for wheat is not applicable for corn because:

            A. corn ears, seed and the corn plant are larger than wheat

            B. corn moisture is usually too high

            C. the cutter bar is too low

            D. corn is planted earlier than wheat


5. A farmer is harvesting rice and notices excessive grain loss after lunch that wasn’t

    there before.  What are two adjustments you might consider to alleviate the problem? 


For the next set of questions, refer to the link on yield monitors:


                                    YIELD MONITORS


6. Four elements needed to calculate a yield monitor are distance, header height, mass

    flow rate of grain and:

            A. temperature                                     B. grain moisture content

            C. test weight                                       D. humidity


7. Four instruments used in combine grain yield monitoring are task computer and

    interface, GPS receiver, mass flow sensor and:

            A. ground base GPS                             B. temperature monitor

            C. digital clock radio                             D. moisture sensor


8. The grain mass flow sensor is usually located:

            A. in the header                                    B. at the straw walkers

            C. near the top of the grain elevator       D. in the bottom of the grain bin


9. What are two factors related to the accuracy of combine yield monitors?