**Top Bio Instrumentation Objective Questions**

**The way that computers manipulate data into information is called**

a) Programming b) Processing c) Storing d) Organizing

**Ans : (b)**

**Computers use the ____________ language to process data.**

a) Processing b) Kilobyte c) Binary d) Representational

**Ans : (c)**

**3. ___________ is the starting point of health care.**

a) Data collection b) Decision making c) Analyzing d) Therapy

**Ans : (a)**

**4. ____________ is a set of computer programs used on a computer to help perform tasks.**

a) An instruction b) Software c) Memory d) A processor

**Ans : (b)**

**5. Alpha numeric data includes results of**

a) CT b) Ultra sound c) MRI d) Lab

**Ans (d)**

**6. Image data will store images in digitized form on**

a) Optical disks b) Magnetic disks c) Lens d) LAN

**Ans : (a)**

**7. S1: In open loop control problem requires human intervention.**

**S2: In closed loop control processor instruct the control to do direct therapeutic intervention on the patient.**

a) Both S1 and S2 are false b) S1 is true and S2 is false c) Both S1 and S2 are true d) S1 is false and S2 is true

**Ans : (c)**

**8. A computer in which the quantities are processed and represented with out use of ________ is called an analogue computer.**

a) Software b) Hard ware c) Programme d) Language

**Ans: (d)**

**9. The process of reducing quantity of data is**

a) Data handling capacity b) Data reduction c) Data processing d) Programme

**Ans: (b)**

**10. The _____________ is widely used to do signal processing of bio signals from the recorders.**

a) CPU b) Memory c) ALU d) Micro controller

**Ans đ d)**

**11. ___________ accepts data from outside.**

a) Input b) Output c) Memory unit d) Control unit

**Ans: (a)**

**12. If the biomedical signal is electrical in nature a simple electrode is used to pass the signal from body to**

a) ADC b) DAC c) Signal conversion system d) Sample and hold circuit

**Ans: (c)**

**13. Amplification is necessary to bring the amplitude of the signal into the range of**

a) ADC b) DAC c) Signal conversion system d) Sample and hold circuit

**Ans: (a)**

**14. ADC holds the analog signal at _________ value during conversion process.**

a) The twice b) A constant c) Half the d) Square the

**Ans : (b)**

**15. _____________ is defined as the smallest input digital code for which a unique analog output level is produced.**

a) Gain b) Resolution c) Accuracy d) Sampling rate

**Ans: (b)**

**16. In ADC the time required to complete one sample determines the**

a) Maximum conversion time b) Sampling rate c) Settling time d) Minimum sampling time

**Ans : (d)**

**17. The dynamic properties of sample and hold circuit are important in the overall performance of**

a) ADC b) DAC c) Signal conversion system d) Sample and hold circuit

**Ans: (a)**

**18. A variation of the counter ADC is**

a) Dual slope b) Filter c) Tracking d) Successive approximation

**Ans : (c)**

**19. The transfer function of digital filter is defined as z transform of**

a) Output sequence/ input sequence b) Output sequence+ input sequence c) Output sequence* input sequence d) Output sequence- input sequence

**Ans: (a)**

**20. ___________ is dependent only on round off error.**

a) Gain b) Resolution c) Accuracy d) Response

**Ans : (c)**

**21. The z transform is important in digital filtering because it describes**

a) Maximum conversion time b) Sampling process c) Settling time d) Sampling rate

**Ans : (b)**

**22. In non recursive filters the transfer function contains**

**S1: Finite number of elements** ** S2: It is quadratic form**

a) Both S1 and S2 are false b) S1 is true and S2 is false c) Both S1 and S2 are true d) S1 is false and S2 is true

**Ans : (b)**

**23. The value of z for which the transfer function goes to _________ is called poles.**

a) Zero b) Unity c) Infinity d) Peak

**Ans : (c)**

**24. A __________ seeks to minimize the number of coded bits stored by reducing the redundancy present in the original signal.**

a) Data reduction algorithm b) Digital filtering c) Time domain technique d) Frequency domain technique

**Ans : (a)**

**25. The original motivation of turning point algorithm was to reduce the_________ of anÂ ****ECG signal.**

a) Gain b) Response c) Sampling rate d) Sampling frequency

**Ans : (d)**

**26. Using turning point algorithm, the sampling frequency of ECG is reduced from**

a) 200 to 100 samples/sec b) 100 to 50 samples/sec c) 250 to 100 samples/sec d) 150 to 50 samples/sec

**Ans : (a)**

**27. The TP algorithm is simple and fast, producing a fixed reduction ratio of**

a) 1:2 b) 3:1 c) 2:1 d) 1:3

**Ans : (c)**

**28. The originally developed algorithm to preprocess ECGâs for rhythm analysis is**

a) TP b) AZTEC c) Data reduction d) Data reconstruction

**Ans : (b)**

**29. _____________ algorithm is a hybrid of TP and AZTEC algorithms.**

a) CORTES b) FAN c) Static Huffman coding d) Adaptive coding

**Ans : (a)**

**30. Expansion of CORTES**

a) Cooperate Reduction Time Enlarging System b) Coordinate Reduction Time Enlarging System c) Cooperate Reduction Time Encoding System d) Coordinate Reduction Time Encoding System

**Ans : (d)**

**31. FA algorithm**

**S1: Draws lines between pairs of starting and ending points** ** S2: All intermediate samples are within some specified error tolerance**

a) Both S1 and S2 are false b) S1 is true and S2 is false c) Both S1 and S2 are true d) S1 is false and S2 is true

**Ans : (c)**

**32. The reduction ratio of Huffman coding depends on the distribution of**

a) Source symbols b) Binary code c) Probability of occurrence d) Variable length

**Ans : (a)**

**33. An example of adaptive scheme is**

a) Huffman coding b) FAN algorithm c) CORTES algorithm d) LZW algorithm

**Ans : (d)**

**34. _________ requires a translation table, where each source symbol is mapped into a unique code word.**

a) Adaptive coding b) Huffman coding c) FAN algorithm d) LZW algorithm

**Ans : (b)**

**35. In _________ algorithm the dynamically derived translation table is sensitive to the variation in local statistical information.**

a) Adaptive coding b) Huffman coding c) FAN algorithm d) LZW algorithm

**Ans : (a)**

**36. Huffman coding assigns variable length code words to a given quantized data sequence according to their**

a) Time of occurrence b) Amplitude of occurrence c) Frequency of occurrence d) DiscrĂ¨te amplitude

**Ans : (c)**

**37. Bio medical signals are often corrupted by**

a) Noise b) Electrodes used c) Amplifiers used d) Power

**Ans : (a)**

**38. The digital computer algorithm for Fourier analysis is called as**

a) Fourier Transform b) Fast Fourier Transform c) Inverse Fourier Transform d) Inverse Fast Fourier Transform

**Ans : (b)**

**39. The angular sampling frequency is given by ?s =**

a) 2?T b) 2?-T c) 2?+T d) 2?/T

**Ans : (d)**

**40. For discrete signals the Fourier transform is continuous and repeats at intervals of**

a) Positive frequencies b) Negative frequencies c) Sampling frequencies d) Alternate positive and negative frequencies

**Ans : (c)**

**41. DFT is the name given to the calculation of the fourier series coefficients for a**

a) Discrete periodic signal b) Discrete aperiodic signal c) Continuous periodic signal d) Continuous aperiodic signal

**Ans : (a)**

**42. In DFT**

**S1: The first spectral line gives amplitude of the DC component in the signal** ** S2: The second line corresponds to frequency.**

**Ans : (c)**

**43. To increase ___________ we must divide the DFT into successively smaller DFTs.**

a) Frequency b) Computation efficiency c) Sampling rate d) Computation time

**Ans : (b)**

**44. Algorithm in which the decomposition is based on splitting sequence into smaller sequences are called**

a) Inverse decimation in time b) Inverse decimation in frequency c) Decimation in time d) Decimation in frequency

**Ans : (d)**

**45. Time domain convolution is often expressed in a short hand notation using a**

a) * b) + c) â d) **

**Ans : (a)**

**46. Parsevalâs theorem expresses the conservation of __________ principle between the time and frequency domain.**

a) Energy b) Power c) Frequency d) Time

**Ans : (a)**

**47. Computer interpretation of __________ uses algorithm to determine whether a patient is normal or abnormal.**

a) 8 lead ECG b) 3 lead ECG c) 12 lead ECG d) 21 lead ECG

**Ans : (c)**

**48. The interpretation program running in the mainframe computer consisted of several hundred thousand lines of __________ code.**

a) C b) C++ c) C# d) FORTRAN

**Ans : (d)**

**49. How many amplifiers does the modern micro processor based interpretive machines include?**

a) 8 b) 12 c) 3 d) 4

**Ans : (a)**

**50. The modern ECG amplifiers have a sampling rate of**

a) 100 sps b) 500 sps c) 250 sps d) 300 sps

**Ans : (b)**

**51. The first step in ECG waveform recognition is to identify all the beats using a ___________ detection algorithm.**

a) R wave b) P wave c) QRS wave d) S wave

**Ans : (c)**

**52. S1: ECG interpretation is a frequency of interpretation process**

**S2: ECG interpretation is a waveform recognition process**

**Ans : (d)**

**53. The R wave duration is**

a) 71 ms b) 70 ms c) 80 ms d) 1.14 ms

**Ans : (a)**

**54. _________ approach is based on a set of rules that operate on the measurement matrix derived from ECG.**

a) Pattern recognition b) Expert system c) Decision logic d) IF-THEN statement

**Ans : (c)**

**55. Which segment represents the period of ECG just after depolarization.**

a) PQ b) RS c) QS d) ST

**Ans : (d)**

**56. Which device is used for determining the potential cardiac problem of an ambulatory patient?**

a) ECG b) VCG c) Holter recorder d) PCG

**Ans : (c)**

**57. S1: Holter monitoring is same as intensive care monitoring.**

**S2: Holter monitoring has a monitoring device.**

**Ans : (b)**

**58. Changes in the ST segment of ECG indicates that there is a deficiency in**

a) Blood supply to heart muscles b) Blood supply to lungs c) Oxygen supply to lungs d) Blood supply to veins

**Ans : (a)**

**59. The R wave amplitude is**

a) 1.04 mV b) 1.24 mV c) 1.14 mV d) 1.01 mV

**Ans : (c)**

**60. The iso electric line is located on the ECG between P and Q wave for a ______ milli second interval of near zero slope.**

a) 35 b) 25 c) 20 d) 30

**Ans : (d)**