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 an 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) Discrète 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.
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)
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
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 : (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.
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)
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)