1. Calibration includes ___________________.
a) checking tractor speed                    c) adjusting pressure
b) calculating nozzle flow rate            d) all of the above

2. Calibration also includes ______________________.
a) checking strainers                            c) checking pumps
b) checking lines                                    d) all of the above

3. Calibration should take place _____________________.
a) before heading to the field               c) while spraying
b) after spraying is completed            d) all of the above

4. A thorough sprayer calibration takes approximately ________________.
a) 1/2 hour                                      c) 4 hours
b) 1 hour                                                    d) 1 day

5. Calibration is important because _________________.
a) it helps protect the environment                                                        c) it improves application accuracy
b) it maximizes investments in crop protection chemicals            d) all of the above

6. Sprayers should be calibrated at least _____ time(s) each year.
a) 1                                                  c) 5-6
b) 2-3                                                          d) 8-12

7. Agitation in the spray tank is typically required when using a ____________.
a) wettable powder                            c) solution
b) dry flowable powder                           d) all of the above

8. When spray nozzles wear out __________________________.
a) over-application occurs                                c) potential for chemical waste, crop burn and environmental risks increases
b) patterns become uneven and spray coverage is poor            d) all of the above

9. Worn or damaged tips should be changed _______________.
a) when the day's spraying is completed                   c) when the spraying season is over
b) immediately                                                                    d) when time allows

10. The best way to determine whether a nozzle is worn is by ________________.
a) calibrating the sprayer                             c) inserting a wire to check the opening size
b) looking at the nozzle                                d) none of the above

11. Nozzles should be cleaned with ____________.
a) alcohol                                                          c) detergent
b) water                                                  d) all of the above

12. A ________________ creates a thin sheet of spray with a specific spray angle.
a) hollow cone                                                c) whirl chamber
b) flat spray                                                     d) none of the above

13. Droplet size is determined by ________________________.
a) orifice size and pressure                    c) speed of application rig
b) size of lines going to the nozzles         d) type of chemical used

14. Spray distributed in _________________ tends to drift more.
a) a stream                                                        c) a fine mist
b) large droplets                                                d) none of the above

15. Spray drift is reduced when boom height is set ________________________.
a) lower to the ground                                    c) closer to the tractor
b) higher off the ground                                  d) all of the above

16. The amount of spray material applied per acre is affected by ______________.
a) width sprayed per nozzle                        c) ground speed of the sprayer
b) nozzle flow rate                                          d) all of the above

17. Installing nozzle tips with smaller openings will make the flow rate _____________, if pressure remains the same.
a) increase                                                        c) stay the same
b) decrease                                                       d) none of the above

18. To double sprayer output, you must increase the pressure _____ time(s).
a) 1                    c) 3
b) 2                    d) 4

19. Doubling the ground speed (MPH) of the sprayer reduces the gallons of spray applied per acre (GPA) by _______.
a) 1/4                c) 1
b) 1/2                d) 2

20. Sprayers should be rinsed __________________.
a) daily                                                                    c) between chemical applications
b) at the end of the spraying season            d) b and c

KEY
1. D             5.D            9.B              13.A            17.B
2. D             6.B            10.A            14.C            18.D
3. A             7.D            11.B            15.A            19.B
4. B             8.D            12.B            16.D            20.D