SECTION 8 – TEMPERATURE MEASUREMENT
คำชี้แจง
- ข้อสอบชุดนี้มีเพียง 20 ข้อ
- ถ้าไม่กรอกทั้งชื่อ และนามสกุลของผู้ทำข้อสอบ ระบบจะไม่ตรวจข้อสอบให้
- ผลสอบจะเก็บเพียง 300 ระเบียนสุดท้าย โดยเรียงจากเวลาล่าสุด
- ถ้าทำข้อสอบไม่ครบ ระบบจะไม่ตรวจข้อสอบให้
- ผู้ทำข้อสอบจะมีเวลาในการทำข้อสอบเพียง 30 นาที หากเกินเวลา ระบบจะไม่ตรวจข้อสอบให้
- เมื่อมีการตรวจคำตอบ ระบบจะบันทึกชื่อ และคะแนนลงฐานข้อมูล พร้อมเวลาเริ่มทำ และเวลาสิ้นสุด
- เกณฑ์ตัดสินผ่านการทดสอบอยู่ที่ร้อยละ 80 หรือ 16 ข้อขึ้นไป
หากต้องการพิมพ์ใบรับรองผลคะแนน โปรดใช้เครื่อง Computer ในการทดสอบและมีจำนวนข้อที่ใช้สอบจำนวน 20 ข้อขึ้นไป และจะแสดงผลสำหรับผู้ที่ผ่านเกณฑ์การสอบเท่านั้น โดยเกณฑ์การสอบอยู่ที่ร้อยละ 80 หรือ 16 ข้อขึ้นไป คลิกที่นี่เพื่อเพิ่มจำนวนข้อทดสอบ
1. 8.23 Liquid-in-glass thermometers are suitable for use in obtaining cargo product temperatures in marine vessels required to operate with closed or restricted systems?
    a. True
    b. False
    c.
    d.
2. 8.45 What is the minimum number of temperatures to be taken in a tank containing less than 3m [10 feet] of product?
    a. 1
    b. 3
    c. 5
    d. 2
3. 8.18 If only one temperature is required where should this temperature be taken from?
    a. The middle of the upper third
    b. The middle of the liquid level
    c. The middle of the lower third.
    d. Use a side readout thermometer
4. 8.31 What is the maximum amount by which the reading on a portable electronic thermometer can vary when it may be considered to have stabilized?
    a. 0.3 °C [0.5°F]
    b. 1 °C [2.0°F]
    c. No variation is permitted
    d. 0.1 °C [0.2°F]
5. 8.35 Which ISO standard covers temperature determination?
    a. ISO 3171
    b. ISO 4268
    c. ISO 4512
    d. ISO 4266
6. 8.09 What is the minimum acceptable accuracy for a portable electronic thermometer when it is indicating a temperature reading of 101 °C [215°F]?
    a. ± 1.0 °C [2.0°F]
    b. ± 0.5 °C [1.0°F]
    c. ± 0.3 °C [0.5°F]
    d. ± 0.75 °C [1.5°F]
7. 8.28 When using a portable electronic thermometer what is an indication of temperature stabilization?
    a. Comparison with the side temperature on the tank
    b. Comparison with a cup-case thermometer
    c. Comparison with the last temperature recorded by the terminal
    d. Readout doesn t vary by more than 0.1°C [0.2°F] for 30 seconds
8. 8.48 What is the recommended immersion time, for a liquid-in-glass thermometer in a cup-case assembly, in motion, in a product with density of 950 kg/m3 [API gravity 17.4]
    a. 45 minutes
    b. 10 minutes
    c. 20 minutes
    d. Until the readout doesn t vary by more than 3.0 °C for 30 seconds
9. 8.26 If a tank has an innage of 2,8m [9 11 ] what is the minimum number of temperatures which should be taken?
    a. One
    b. Two
    c. Three
    d. None
10. 8.07 When verifying a portable electronic thermometer with a range of 0 to 95 °C [32 to 200°F] , what is the maximum permissible error before it should be recalibrated?
    a. ± 0.3 °C [0.2°F]
    b. ± 0.05 °C [0.1°F]
    c. ± 1.0 °C [2.0°F]
    d. Answers a., b. and c. are all wrong - it must be exact
11. 8.36 A liquid-in-glass thermometer with a range between 60°F and 180°F and must be accurate to within?
    a. ± 1.0 °F
    b. ± 0.5 °F
    c. ± 0.1 °F
    d. ± 0.25 °F
12. 8.14 When using a liquid-in-glass thermometer it is important to consider that
    a. It should remain in the oil long enough to reach the temperature of the liquid
    b. It takes longer to obtain temperatures with a liquid in glass thermometer than a portable electronic thermometer
    c. It should be lowered using a gauging tape
    d. Answers a. and b are correct
13. 8.25 According to API MPMS Chapter 7 the minimum amount of time that an in motion probe should stay in a product with an API gravity less than 20 is?
    a. 80 minutes
    b. 30 minutes
    c. 75 seconds
    d. 10 seconds
14. 8.42 In motion is defined as continuously raising and lowering the probe above and below the desired temperature measurement depth, by approximately how much?
    a. 15cm [6 inches]
    b. 1metre [40 inches]
    c. 30cm [12 inches]
    d. 50cm [20 inches]
15. 8.06 On a portable electronic thermometer, what should be checked at least once per month?
    a. The junction between the cable and the probe for mechanical damage
    b. The cable insulation for cuts, breaks, or abrasion.
    c. Two or more temperatures near the ends of the range of the probe
    d. Answers a., b. and c. are all correct
16. 8.04 Why do portable electronic thermometers have low-voltage indicators?
    a. So that it will not fail half way through the inspection
    b. The unit could give false readings if the battery is low
    c. If the voltage drops, the night-light will not work
    d. Most portable electronic thermometers do not have an indicator
17. 8.47 When taking temperatures, in motion means to move the temperature measurement device approximately 60cm [2 feet] above and 60cm [2 feet] below the desired measurement location?
    a. True
    b. False
    c.
    d.
18. 8.39 An ASTM 59C [ASTM 59F-80] liquid-in-glass thermometer has a scale range of -18°C to 82°C [0°F-180°F]. What should the graduations on this thermometer be?
    a. 0.1°C [0.2°F]
    b. 0.25°C [0.5°F]
    c. 1.0°C [2.0°F]
    d. 0.5°C [1.0°F]
19. 8.20 What is the minimum amount of product needed for a temperature to be taken?
    a. Whenever there is sufficient material present to immerse the probe
    b. 30 cm [1 foot]
    c. One metre [3 feet]
    d. Temperatures should only be taken when the roof is floating freely
20. 8.40 When first received from the manufacturer or equipment supplier, what should happen to a new liquid-in-glass tank thermometer?
    a. It can be used immediately because the manufacturer calibrates the thermometer before it is shipped
    b. It must be checked to see that the liquid column is intact, then it may be used since the manufacturer will have calibrated the thermometer.
    c. It must be checked to see that the glass stem is not cracked or broken, then it may be used since the manufacturer will have calibrated the thermometer
    d. It must be compared against a thermometer certified by a National Standard body or an equivalent thermometer of traceable accuracy.
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