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69. When using an electronic potentiometer connected to a thermocouple to measure temperature, if the temperature at the hot end rises by 2°C and the room temperature (the temperature at the cold end) drops by 2°C, then the reading on the instrument will be ( ). A. Increase by 4°C B. Increase by 2°C C. Decrease by 2°C D. Decrease by 4°C 70. The function of integral control is ( ). A. Eliminate residual errors B. Timely and effective action C. Proactive approach D. All of the above. 71. The pressure difference between the upper and lower parts of the rotor in a rotameter is determined by ( ). A. Flow velocity of the fluid B. Pressure of the fluid C. Weight of the rotor D. Cross-sectional area of the flow channel 72. Which of the following statements is correct? ( ) A. The magnitude of the output signal from the valve positioner is proportional to the magnitude of the input signal. B. The stroke of the valve stem is proportional to the magnitude of the input signal to the valve positioner. C. The stroke of the valve stem is proportional to the magnitude of the output signal from the valve positioner. D. The stroke of the valve stem is inversely proportional to the magnitude of the input signal to the valve positioner. BACB If you think the given answers are not complete or accurate, feel free to share your insights! Please set replies to be visible only to the responder. If not set, no scoring will be performed. (Second edits do not count.) How to hide it: http://down1.hcbbs.com/forum/201511/09/204010yjbf8w8jw4hou8t3.png.thumb.jpg Moderator scoring rules: Active participation +4 wealth (pre-set by the system); answering two questions correctly +8 wealth; in-depth discussion +10 wealth. Once the next post is published, replies to this post will be closed; it will be available only for reading. These posts in this series will not be pinned or highlighted!
When using an electrometric potentiometer connected to a thermocouple to measure temperature, if the temperature at the hot end rises by 2°C and the room temperature (the temperature at the cold end) drops by 2°C, then the reading shown on the instrument is (a). A. Increase by 4℃
The function of integral control is (a). A. Eliminate residual errors
The pressure difference above and below the rotor in a rotameter is determined by (a). A. Flow velocity of the fluid
69. When using an electronic potentiometer connected to a thermocouple to measure temperature, if the temperature at the hot end rises by 2°C and the room temperature (the temperature at the cold end) drops by 2°C, then the reading on the instrument is (B). A. Increase by 4°C B. Increase by 2°C C. Decrease by 2°C D. Decrease by 4°C 70. The function of integral regulation is (A). A. Eliminating residual errors B. Timely and effective action C. Proactive approach D. All of the above 71. The pressure difference across the rotor in a rotameter is determined by (C). A. Flow velocity of the fluid B. Pressure of the fluid C. Weight of the rotor D. Cross-sectional area of the flow channel 72. Which of the following statements is correct? (B) A. The magnitude of the output signal from the valve positioner is proportional to the magnitude of the input signal. B. The stroke of the valve stem is proportional to the magnitude of the input signal to the valve positioner. C. The stroke of the valve stem is proportional to the magnitude of the output signal from the valve positioner. D. The stroke of the valve stem is inversely proportional to the magnitude of the input signal to the valve positioner
69, B, ------------------------ 70, A, --------------------- 71, C. ----------------------72, C. ---------------
69, B 70, A 71, C 72, B
69, B 70, A 71, C 72, B
69. When using an electronic potentiometer connected to a thermocouple to measure temperature, if the temperature at the hot end rises by 2°C and the room temperature (the temperature at the cold end) drops by 2°C, then the reading on the instrument is (B). A. Increase by 4°C B. Increase by 2°C C. Decrease by 2°C D. Decrease by 4°C 70. The function of integral control is (A). A. Eliminate residual errors B. Prompt and effective C. Proactive D. All of the above. 71. The pressure difference between the upper and lower parts of the rotor in a rotameter is determined by (C). A. Flow velocity of the fluid B. Pressure of the fluid C. Weight of the rotor D. Cross-sectional area of the flow channel 72. Which of the following statements is correct? (B) A. The magnitude of the output signal from the valve positioner is proportional to the magnitude of the input signal. B. The stroke of the valve stem is proportional to the magnitude of the input signal to the valve positioner. C. The stroke of the valve stem is proportional to the magnitude of the output signal from the valve positioner. D. The stroke of the valve stem is inversely proportional to the magnitude of the input signal to the valve positioner
This post was last edited by wo_call_you on 2015-12-6 09:14 BACB