Choose the correct letter of the answer. 1. The following statements are true about enhancing the signal to noise ratio except: A. Shielding can reduce noise generated by electromagnetic radiation by surrounding the most critical wire in a circuit with a conducting material that is attached in a ground; B. Techniques of minimizing noise through grounding and shielding is considered an art than science; C. When the output of high resistance transducer is being amplified, shielding is not applicable to produce a relative large voltage fluctuations from a minuscule randomly induced currents; D. Noise can arise from environmentally generated electromagnetic radiation. E. All of the choices are false F. None of the choices given 2. A transducer that converts information from an electrical domain to a non - electrical domain that can take the form of a graphic output of a cathode ray tube A. Photodiodes B. Thermistors
Choose the correct letter of the answer.
1. The following statements are true about enhancing the signal to noise ratio except:
A. Shielding can reduce noise generated by electromagnetic radiation by surrounding the most critical wire in a circuit with a conducting material that is attached in a ground;
B. Techniques of minimizing noise through grounding and shielding is considered an art than science;
C. When the output of high resistance transducer is being amplified, shielding is not applicable to produce a relative large voltage fluctuations from a minuscule randomly induced currents;
D. Noise can arise from environmentally generated electromagnetic radiation.
E. All of the choices are false
F. None of the choices given
2. A transducer that converts information from an electrical domain to a non - electrical domain that can take the form of a graphic output of a cathode ray tube
A. Photodiodes
B. Thermistors
C. Read-out device
D.Photomultiplier
E. All of the choices given
F. None of the choices given
3. Which of the following statement is false about detection limit?
A. It is the minimum concentration that can be detected at a known confidence level
B. Depends upon the ratio of the magnitude of the analytical signal to the size of the statistical fluctuations in the blank signal
C. As the limit of detection is approached, the analytical signal and its standard deviation approach the blank signal and its corresponding standard deviation
D. Difficult to determine for some equipment due to instrumental deviations and leads to no detection at all.
E. All of the choices given
F. None of the choices given
Step by step
Solved in 2 steps
