3. The principal ion that is not involved with the phenomena of producing cell potentials is
Correct : D. hydrogen
4. What is the relatively static membrane potential of quiescent cells called?
Correct : C. resting membrane potential
5. The variation of the electrical potential associated with the passage of a pulse along the membrane of a muscle cell or a nerve cell is called
Correct : B. action potential
6. Cells depolarize and action potential in generated as soon as a stimulus is applied.
Correct : B. False
7. After a cell is stimulated, a finite period of time is required for the cell to return to its
pre-stimulus state. This period is known as
Correct : B. refactory period
8. Electrooculography (EOG/E.O.G.) is a technique for measuring what?
Correct : D. cornea-retinal standing potential
9. EKG stands for
Correct : A. Electrocardiography
10. Phonocardiography is listening to
Correct : C. heart sound
11. Which type of electrodes are employed to study the electrical activities of individual cells?
Correct : B. micro-electrodes
12. Glass micro-capillaries are a type of micro electrode.
Correct : A. True
13. Glass microcapillaries are preferred over metallic electrodes because of the former
Correct : D. has sustainable current carrying capacity
14. Do metallic micro electrodes exist.
Correct : A. True
15. Metallic micro electrodes have impedance compared to conventional electrodes?
Correct : D. very high
16. Which of the following electrode is manufactured by circumferential application of heat to a
small area of glass tubing and pulling the glass when it gets soft?
Correct : C. micro pipette
17. Which of the following metal is preferred for manufacturing micro electrodes?
Correct : B. Tungsten
18. are devices which convert one form of energy into another.
Correct : A. transducers
19. Electrodes make a transfer from the in the tissue to the electronic conduction which is necessary to make measurements.
Correct : B. ionic conduction
20. Surface electrodes damage the living tissues.
Correct : B. False
21. Deep-seated electrodes indicates the electric potential difference arising the living
tissues or cells.
Correct : A. inside
22. Impedance pneumography is a commonly-used technique to monitor a person’s
Correct : A. respiration rate
23. Electrode paste
Correct : C. reduces contact impedance
24. All electrode potentials are measured with respect to which reference electrode?
Correct : D. hydrogen absorbed on platinum electrode
25. What is the frequency range of ECG?
Correct : B. 0.05-120 Hz
26. Needle electrode is used to measure
Correct : D. EMG
27. From equipment point of view, the respiratory system in the human body is a
system.
Correct : B. pneumatic
28. Off-set potential is
Correct : A. difference in half-cell potentials between two electrodes
29. Which of the following is not preferred for electrode making?
Correct : C. Stainless-steel
30. Which of the following statement is false about polarizable electrodes?
Correct : D. can transmit small bioelectric signals even after getting exposed to large pulse of energy
31. Which electrodes can work even after being induced to large electric discharge such as
defibrillation?
Correct : C. non-polarizing electrodes
32. The frequency range of ECG is
Correct : A. 0.05-150 HZ
33. Which of the following amplifier circulatory is employed to reduce the hum noise generated
by the power supply in the ECG circuit?
Correct : C. notch filters
34. The branch of medicine that deals with the provision and use of artificial devices such as
splints and braces is
Correct : C. laproscopic
35. The sensitivity of an electrocardiograph is typically set at 10 mm/mV.
Correct : A. True
36. The volume of blood within the dialyzer is known as
Correct : C. priming volume
37. The ideal membrane should possess to water.
Correct : B. high permeability to water
38. To achieve optimum performance and to enable the relationship of change in resistance with
the volume of the cell to hold good, it is recommended that the ratio of the aperture length to the diameter of the aperture should be
Correct : C. 0.75:1
39. The blood is a poor conductor of electricity.
Correct : A. True
40. In floating electrodes metal electrode does not make direct contact with the skin.
Correct : A. True
41. The number of leads necessary for an ECG is
Correct : A. 3
42. Which of the four limbs acts like a ground and thus is not a part of the ECG test?
Correct : C. Right Leg
43. What result do the various combinations of limb leads give?
Correct : A. Einthoven’s Triangle
44. The most common placement of the leads from the Einthoven’s triangle is
Correct : B. Positive Left Leg and Negative Right Arm
45. A typical ECG wave is
Correct : C. Quasi – Periodic
46. The amplitudes of the segments of the wave are
Correct : A. P = 0.25 mV, Q = 0.4mV, R = 1.60mV, T = 0.1 – 0.5 mV
47. Bradycardia ECG will show what kind of wave?
Correct : B. The impulses have decreased
48. Which of these conditions are natural conditions for tachycardia?
Correct : A. Running
49. Electrodes to measure EEG are placed on
Correct : B. scalp
50. According to the international 10/20 system to measure EEG, even number denotes which side
of the brain?
Correct : D. right
51. Letter F in the EEG electrode placement system denotes?
Correct : C. frontal lobe
52. Normal EEG frequency range is
Correct : B. 0.5-50HZ
53. The letter T in the EEG electrode placement system denotes?
Correct : A. temporal lope
54. According to the international 10/20 system to measure EEG, odd number denotes which side
of the brain?
Correct : A. left
55. The delta wave in EEG ranges from
Correct : A. 0.5-4Hz
56. Disturbance in the EEG pattern resulting from the external stimuli is called
Correct : C. evoked response
57. The peak to peak amplitude of the waves that can be picked from the scalp is
Correct : C. 100uV
58. Which rhythm is the principal component of the EEG that indicates the alertness of the
brain?
Correct : D. alpha rhythm
59. Which of the following is a preferred electrode for measuring EMG?
Correct : B. needle electrodes
60. Generally what is the material of needle electrodes?
Correct : A. stainless steel
61. Monopolar needle electrodes are having coatings of which material over the stainless steel
wires which are bare only at the tips?
Correct : D. teflon
62. Which electrode can be used to pick up signals from individual fibers of muscle tissues?
Correct : C. multi-element needle electrode
63. instrument is used to hold patients head and guide the placement of electrodes.
Correct : C. Stereotaxic
64. Number of cloud deployment models that are recognized are
Correct : C. 3
65. The ground electrode is usually positioned over which body structures?
Correct : A. bony
66. When intramuscular EMG is required to look into the electrical activities of deeper or overlaid
muscles, electrodes are used.
Correct : D. fine wire electrodes
67. The contraction of the skeletal muscles results in the generation of action potential in the
individual muscle fibers. Record of this action potential is called
Correct : B. EMG
68. In voluntary contraction of the skeletal muscles, the muscle potential ranges from
Correct : A. 50 uV – 5 mV
69. Bio potential amplifiers have input terminals.
Correct : A. 3
70. The ability of the amplifier to reject common voltages on its two input leads is known as
Correct : C. common mode rejection ratio
71. CMRR is measured in
Correct : B. dB
72. CMRR of the preamplifiers should be as high as possible.
Correct : A. True
73. The output of differential gain is given by
Correct : A. (difference of the two input voltage)*(feedback resistance/input resistance)
74. In order to be able to minimize the effects of changes occurring in the electrode impedances, it
is necessary to employ a preamplifier having a high input impedance.
Correct : A. True
75. The impedance of the input should be in order to obtain high CMRR in the
differential amplifier.
Correct : B. High
76. A Differential Amplifier should have collector resistor’s value (RC1 & RC2) as
Correct : A. 5kΩ, 5kΩ
77. A Differential Amplifier amplifies
Correct : D. None of the Mentioned
78. The value of emitter resistance in Emitter Biased circuit are RE1=25kΩ & RE2=16kΩ. Find RE
Correct : A. 9.756kΩ
79. If output is measured between two collectors of transistors, then the Differential amplifier with
two input signal is said to be configured as
Correct : A. Dual Input Balanced Output
80. A differential amplifier is capable of amplifying
Correct : C. AC & DC input signal
81. In ideal Differential Amplifier, if same signal is given to both inputs, then output will be
Correct : D. Zero
82. An emitter bias Dual Input Balanced Output differential amplifier has VCC=20v, β=100,
VBE=0.7v, RE=1.3kΩ. Find IE
Correct : A. 7.42mA
83. Find IC, given VCE=0.77v, VCC=10v, VBE=0.37v and RC=2.4kΩ in Dual Input Balanced
Output differential amplifier
Correct : C. 4mA
84. For the circuit shown below, determine the Output voltage (Assume β=5, differential input
resistance=12 kΩ)
Correct : C. 3.33v
85. In a Single Input Balanced Output Differential amplifier, given VCC=15v, RE = 3.9kΩ,
VCE=2.4 v and re=250Ω. Determine Voltage gain
Correct : A. 26
86. The characteristic impedance of a quarter wave transformer with load and input
impedances given by 30 and 75 respectively is
Correct : A. 47.43
87. For a matched line, the input impedance will be equal to
Correct : B. Characteristic impedance
88. The reflection coefficient lies in the range of
Correct : A. 0 < τ < 1
89. When the ratio of load voltage to input voltage is 5, the ratio of the characteristic
impedance to the input impedance is
Correct : B. 5
90. The power of the transmitter with a radiation resistance of 12 ohm and an antenna current
of 3.5A is
Correct : A. 147
91. The group delay of the wave with phase constant of 62.5 units and frequency of 4.5
radian/sec is
Correct : A. 13.88
92. 5 is" The maximum impedance of a transmission line 50 ohm and the standing wave ratio of
Correct : B. 125
93. 5 and Zo = 50, we get Zmax = 2.5 x 50 = 125 ohm.
"9.
Correct : C. 18.75
94. The average power in an electromagnetic wave is given by
Correct : B. poynting vector
95. The characteristic impedance of a transmission line is normally chosen to be
Correct : C. 50 or 75
96. Identify the material which is not present in a transmission line setup.
Correct : D. oscillator
97. What is the Common Mode Rejection Ratio?
Correct : B. Ability of an amplifier to reject common mode signals
98. Which of the following is not a characteristic of an ideal op-amp?
Correct : A. Zero slew rate
99. For an inverting amplifier positive terminal of input is connected to of 741 IC.