1-35. Which of the following statements con- 1-41. 

 cerning the table of "r" values is cor- 

 rect? 



1. An "r" table may be used at all 

 stations 



2. The values found in the "r" table 

 are a ratio of station pressure to 

 temperature 



3. The table is used in conjunction with 

 the meteorological computer, CP-402/ 

 UM, for the determination of sea 

 level pressure 



4. By algebraically adding the appropri- 1-42. 

 ate value from the "r" table to sea 



level pressure, station pressure may 

 be computed 



1-36. Altimeter settings are computed for all 

 observations EXCEPT for 



1. single element special observations 



2. special observations 



3. local observations 



4. record special observations 



When the roll of a ship causes the indica- 

 tor on the aneroid barometer to oscillate, 

 how, if at all, should the observer obtain 

 the station pressure? 



1. By taking the higher pressure position 

 on the indicator 



2. By taking the mean pressure position 

 on the indicator 



3. By taking the lower pressure position 

 on the indicator 



4. No pressure reading should be taken 



A barometer has been installed and opera- 

 tionally accepted as reliable in your 

 weather office. At 6-hour intervals on 

 the same day of each week comparisons are 

 made and entered on MF1-13 in accordance 

 with instructions on the reverse side of 

 the form. How many comparisons are made? 



1. Five 



2. Two 



3. Three 



4. Four 



1-37. The net pressure change in a specified 



time and the characteristics of the change 

 during that specified time are generally 

 determined only at stations equipped with 

 a/an 



1. CP-402/UM 



2. AN/GMQ-14( ) 



3. microbarograph 



4. hygrothermograph 



1-38. What is indicated if the entry in column 



5 of the MF1-10 form is 985? 1^43. 



1. A station pressure of 29.985 in. 



2. A sea level pressure of 998.5 mb 



3. An altimeter setting of 29.985 in. 



4. A sea level pressure of 1,099.85 mb 



1-39. If the altimeter setting of a station was 

 determined to be 29.97 inches from pres- 

 sure instruments NOT periodically checked 

 with a mercurial barometer, how is this 

 information to be entered in column 12 of 

 an MF1-10 form? 



1. 997E 



2. E997 1-44. 



3. E99.7 



4. 99. 7E 



1-40. How is the sea level pressure recorded in 

 column 9 on the MF1-11 form determined? 



1. By adding a constant-pressure reduc- 

 tion factor to the station pressure 

 entered in column 23 



2. By converting the station pressure 1-45. 

 entered in column 23 to millibars and 

 subtracting 0.037 mb 



3. By observing a mercurial barometer 

 which has been compared to an aneroid 

 barometer 



4. By subtracting 0.001 inch from the sta- 

 tion pressure entered in column 23 



Learning Objective: Relative to 

 barographs and barometers, recog- 

 nize operational characteristics 

 and procedures, construction fea- 

 tures, operating features, compo- 

 nent functions, and maintenance 

 procedures. 



A marine barograph is often referred to as 

 a microbarograph because of its 



1. reduced scale, high sensitivity, and 

 remote recording features 



2. high sensitivity, magnified scale, 

 and accurate temperature compensation 



3. magnified scale, widely calibrated 

 range, and precision maintenance 

 ability 



4. widely calibrated range, accurate 

 temperature compensation, and remote 

 recording features 



What part of the pen shaft assembly of a 

 marine barograph prevents pitch, roll, and 

 vibration of the ship from causing exces- 

 sive variations from the true reading? 



1. The case mounting 



2. The damping cylinder 



3. The range adjustment 



4. The linearity adjustment 



The chart used with the marine barograph 

 will record barometric pressure over a 

 period of how many hours? 



1. 192 hr 



2. 132 hr 



3. 108 hr 



4. 96 hr 



