1. Calibration includes ___________________.

a) checking tractor speed
b) calculating nozzle flow rate
c) adjusting pressure
d) all of the above

2. Calibration also includes ______________________.

a) checking strainers     b) checking lines   c) checking pumps      d) all of the above

3. Calibration should take place _____________________.

a) before heading to the field
b) after spraying is completed
c) while spraying
d) all of the above

4. A thorough sprayer calibration takes approximately ________________.

a) 1/2 hour     b) 1 hour      c) 4 hours     d) 1 day

5. Calibration is important because _________________.

a) it helps protect the environment
b) it maximizes investments in crop protection chemicals
c) it improves application accuracy
d) all of the above

6. Sprayers should be calibrated at least _____ time(s) each year.

a) 1      b) 2-3      c) 5-6      d) 8-12

7. Agitation in the spray tank is typically required when using a ____________.

a) wettable powder                
b) dry flowable powder
c) solution
d) all of the above

8. When spray nozzles wear out __________________________.

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

9. Worn or damaged tips should be changed _______________.

a) when the day's spraying is completed
b) immediately
c) when the spraying season is over
d) when time allows

10. The best way to determine whether a nozzle is worn is by ________________.

a) calibrating the sprayer
b) looking at the nozzle
c) inserting a wire to check the opening size
d) none of the above

11. Nozzles should be cleaned with ____________.

a) alcohol
b) water   
c) detergent                                
d) all of the above

12. A ________________ creates a thin sheet of spray with a specific spray angle.

a) hollow cone
b) flat spray
c) whirl chamber
d) none of the above

13. Droplet size is determined by ________________________.

a) orifice size and pressure                
b) size of lines going to the nozzles
c) speed of application rig
d) type of chemical used

14. Spray distributed in _________________ tends to drift more.

a) a stream
b) large droplets
c) a fine mist
d) none of the above

15. Spray drift is reduced when boom height is set ________________________.

a) lower to the ground
b) higher off the ground
c) closer to the tractor
d) all of the above

16. The amount of spray material applied per acre is affected by ______________.

a) width sprayed per nozzle
b) nozzle flow rate
c) ground speed of the sprayer
d) all of the above

17. Installing nozzle tips with smaller openings will make the flow rate _____________, if pressure remains the same.

a) increase
b) decrease
c) stay the same
d) none of the above

18. To double sprayer output, you must increase the pressure _____ time(s).

a) 1          b) 2           c) 3           d) 4

19. Doubling the ground speed (MPH) of the sprayer reduces the gallons of spray applied per acre (GPA) by _______.

a) 1/4        b) 1/2           c) 1                d) 2

20. Sprayers should be rinsed __________________.

a) daily
b) at the end of the spraying season
c) between chemical applications
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