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1.	________ is not part of the manifold.(a) Transmission tubing(b) Pump tubes(c) Platter(d) Plastic tubesThis question was addressed to me in exam.I want to ask this question from Medical Diagnosis with Chemical Tests topic in section Clinical Laboratory Instruments of Biomedical Instrumentation
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2.	In the sampler, the range of the sample size is from _______(a) 0.1 to 8.5 ml(b) 1 to 8.5 ml(c) 0.85 to 0.1 ml(d) 8.5 to 10 mlThis question was addressed to me during a job interview.I would like to ask this question from Medical Diagnosis with Chemical Tests in chapter Clinical Laboratory Instruments of Biomedical Instrumentation
Answer» The correct answer is (a) 0.1 to 8.5 ml Easiest explanation: With this sampler, the sample size may range from 0.1 to 8.5 ml. It UTILIZES cups of sizes 0.5, 2, 3 and 10 ml. The sample plate is KEPT covered to prevent EVAPORATION, which may sometimes lead to errors up to 5%. Sampling and washing periods are controlled by a PROGRAMMING cam.

3.	The function of the _________ is to continuously and simultaneously push fluids, air and gases through the analytical chain.(a) sampling unit(b) proportioning pump(c) manifold(d) dialyzerI got this question during an internship interview.Asked question is from Medical Diagnosis with Chemical Tests topic in portion Clinical Laboratory Instruments of Biomedical Instrumentation
Answer» Correct choice is (b) PROPORTIONING pump Explanation: The FUNCTION of the proportioning pump is to CONTINUOUSLY and SIMULTANEOUSLY push fluids, air and gases through the analytical CHAIN. In fact, it is the heart of the automatic analysis system.

4.	In the proportioning pump, two speed pump has a non-synchronous _____ rpm motor.(a) 10 rpm(b) 30 rpm(c) 45 rpm(d) 15 rpmI got this question in class test.This interesting question is from Medical Diagnosis with Chemical Tests in section Clinical Laboratory Instruments of Biomedical Instrumentation
Answer» Correct OPTION is (c) 45 rpm Easiest explanation: Proportioning PUMPS are available either for single-speed or for two-speed operations. The single-speed pump has the capacitor synchronous gear head utilizing 10 rpm OUTPUT shaft at 50 Hz. The two-speed pump has a non-synchronous 45 rpm MOTOR.

5.	The blood pressure within the glumerular capillaries is _________ of mercury.(a) 80 mm(b) 70-80 mm(c) 90 mm(d) 70-90 mmI had been asked this question in a national level competition.The origin of the question is Medical Diagnosis with Chemical Tests topic in chapter Clinical Laboratory Instruments of Biomedical Instrumentation
Answer» The correct answer is (d) 70-90 mm The explanation is: The renal arteries carry BLOOD at very high pressure from the AORTA into the glomerular CAPILLARY tuft. The blood pressure within the glomerular capillaries is 70–90 mm of mercury. The blood flow through the capillary tuft is controlled by the state of contraction of the muscle of the arteriole LEADING to the tuft.

6.	Which of the following is not the electrolyte?(a) Bicarbonate(b) Potassium(c) Magnesium(d) SodiumThe question was posed to me in an interview for job.This interesting question is from Medical Diagnosis with Chemical Tests in portion Clinical Laboratory Instruments of Biomedical Instrumentation
Answer» Correct option is (c) Magnesium The explanation: For instance, the group of important anions and cations of the blood PLASMA (ELECTROLYTES) like sodium, potassium, CHLORIDE and bicarbonate, which together with SERUM urea form a related set of tests— performed on patients with ELECTROLYTE disturbances.

7.	In the sampling control, one complete rotation of the plate thus presents _______(a) 35 samples(b) 40 samples(c) 20 samples(d) 30 samplesThe question was asked during an interview.My query is from Medical Diagnosis with Chemical Tests topic in chapter Clinical Laboratory Instruments of Biomedical Instrumentation
Answer» Right answer is (b) 40 samples The explanation: The plate rotates a DISTANCE sufficient to allow the tube, when it NEXT moves down, to dip into the next cup. One complete rotation of the plate thus presents 40 samples. As the sample plate completes a cycle, a switch is OPERATED, which stops the ROTATING ACTION of the plate and the sampling action of the sample probe. The sampling rate can be adjusted to 20, 40 or 60 per hour.

8.	Which cams are used in the earlier modules of auto-analyzers to initiate and control sample aspiration and wash cycles?(a) Electrical cams(b) Digital cams(c) Analog cams(d) Mechanical camsI have been asked this question in a national level competition.Enquiry is from Medical Diagnosis with Chemical Tests in chapter Clinical Laboratory Instruments of Biomedical Instrumentation
Answer» Right CHOICE is (d) MECHANICAL cams The best I can explain: Mechanical cams were used in the EARLIER modules of auto-analyzers to initiate and control sample aspiration and wash cycles. Modern systems USE electronic TIMERS to do the same function. These timers provide greater flexibility in the control of the sample-to-wash ratios, which in turn allows flexibility in setting up parameters for analyses.