electronics info
TRANSCRIPT
-
8/7/2019 Electronics INFO
1/4
1. Huntron tracker alternate mode
2. Chop mode high frequency sampling and display
3. 5% - typical accuracy for time based measurements
4. 7% - typical accuracy maximum magnification
5. 5% of vertical trace - typical width of trace in oscilloscope6. 3% - volt per division
7. 1Mohm with 30pf capacitance input of oscilloscope
8. Multiple function generator used to display intermodulation distortion
9. 50 500 v range of breakover voltage for scr
10. 30 100 A - range of forward current for scr
11. Germanium dioxide used for commercial germanium diodes
12. Curve tracer commercial available tracer
13. 1 um accuracy of visual proximity sensor
14. Photodetector heart of all photo sensor15. Squid used in MEG(magnetoencephalography)
16. Jones circuit uses scr for triggering dc motor
17. 1934 zener diode was developed
18. 1958 esaki diode was developed
19. Actuating signal difference between reference signal and feedback signal
20. Germanium used as cryogenic thermistor
21. LED has a disadvantage of wider spectral width
22. 2 to 3 times injection laser diode is brighter than led by _______
23. Childs law variation of voltage and current values24. Rodney brooks famous for his insect robots
25. Boole first to use mathematical analysis in logic circuits
26. TTL has larger input current compared to DTL
27. RTL is slow because of its input base resistance and transistor
capacitance
28. RCTL faster version of RTL
29. 10khz 75khz frequency range of ultrasonic welding
30. 450khz high frequency welding
31. Cold welding pressure welding32. Friction welding solid state welding
33. Diffused junction used in solar cells
34. Alloy junction used in high power transistor and simple to make
35. MESA transistor has a disadvantage of having collector resistance
36. Series field resistance winding causes an increase in speed of dc motor
-
8/7/2019 Electronics INFO
2/4
37. Series resistance with the armature limits the starting current of dc motor
38. Diode conducts in only one direction
39. A1,A2,A3 also called electron lens
40. A2 - also called focus ring, has potential of -2kV
41. Beam finder - shifted beam42. Vertical A and B oscilloscope that show 2 displays
43. MosFET conduction graph is parabolic
44. Chain drive constant gear
45. Expert system a rule based system
46. For every 10 deg. C increase in temp saturation current doubles
(100% increase)
47. For every 1 deg. C increase in temp saturation current increases 7%
48. 12kV potential of helix in oscilloscope
49. 10V turning off voltage of HDL50. 1.1 eV energy gap for silicon
51. 58 62 Hz vibrating reed
52. 0.5MHz - 3GHz range of frequency meter
53. 10^9 switching speed of SCR
54. Tunnel diode no isolation
55. Average current decreases when the firing angle is increased in an SCR
56. Speed increases when the firing angle is increased in an SCR
57. Motor is jogged when applied with short burst of current/voltage
58. Voltage shunt voltage source employed in OP-AMPS59. Class A uses transformer coupling
60. Impedance coupling used in high frequency
61. RC coupling for multiple networks
62. Sample and hold circuit used in constant gain non-inverting op-amp
63. ICBO most important parameter
64. Diode normal operating condition VBE = 0.7v , VCB = 0.2v
65. Wien bridge measures capacitance and losses
66. Vacuum tube used in grid dip meter (tandaan vacuum tubes lng ang my
grid whether triode, tetrode etc)67. Water used in 1GHz flow calorimeter
68. Squirrel cage motor has low starting torque
69. Series motor universal motor
70. Digital computer pulsed counting accelerometer
71. Accelerometer is based on inertia
-
8/7/2019 Electronics INFO
3/4
72. Screening mammogram used for breast scanning
73. 1 CE and CB cascade configuration
74. Examples of gas discharge tube include neon and fluorescent
75. External current limiter protection on gas discharge tube
76. HTL fastest unsaturated77. ECL fastest saturated
78. RTL first to be implemented in logic gate (1960)
79. 2 comparators used in 3 bit ADC
80. Fibrous braid most commonly used wire protection
81. Earth fault leakage current from center of wire to earth
82. Blavier test for single wire cable
83. Steering the solder while soldering prevents sweat joint
84. Quarter adder without carry
85. 2 halfwave rectifier used as voltage doubler86. 1 10 H range of power supply choke
87. Eutectic alloy no semiliquid phase
88. Application of positive feedback narrowband amplifier, oscillator, radio
receiver
89. Rosin flux used in electronic circuits
90. +/- 50 to +/- 500 mV range of small signal sensor
91. Moving coil instrument even scale in measuring dc
92. Moving coil rectifier instrument even scale in measuring ac
93. Moving iron instrument uneven scale in measuring ac/dc94. Moving magnet instrument uneven scale in measuring dc
95. Moving magnet rectifier instrument uneven scale in measuring ac
96. 22% - max efficiency of solar panel
97. Walkthrough programming used by playback robot
98. Solar panel has lower resistance compared to photodiode
99. Potentiometer used in comparing voltages
100. Potentiometer used as position sensor in servo system
101. AC servomotor easy to manufacture at high torque
102. QRIO Sony robot103. Relay used to decrease current in circuit
104. Air gap in magnetic circuit increases reluctance
105. Maximum power transfer occurs when load equals input impedance of
generator
106. Diode is unidirectional and unilateral
-
8/7/2019 Electronics INFO
4/4
107. Transistor will be unstable due to temperature variation and parameter
variation
108. Nyquist plot - steady state frequency analysis
109. Negative bias the gain is proportional to the decrease in output
impedance110. 10:1 attenuation of 10 fold probe
111. Unbiased pn junction has contact potential
112. Commutator used to generate dc voltage
113. SMAW (shielded metal arc welding) uses the tip of electrode that is
melting
114. Slip speed synchro rotor speed
115. Clinometer measure slope
116. Thermal stability advantage of UJT vs FET
117. Varley loop test measure fault in telephone cable118. De sautys bridge measures capacitance based on known capacitance
119. Autonomous robot works independent
120. Cray 1 supercomputer using gallium arsenide (invented by Seymour
Cray)
121. Android is best use in environment with children
122. Triac is used in colored TV
123. Bistable uses 2 nand gates
124. Manipulator robot arm
125. High level language source program126. Biometry is used for identification, verification and authorization
127. Core loss eddy current and hysteresis loss
128. Zinc cathode of a dry cell
129. Greater accuracy advantage of multispeed over single speed synchro
130. FLOPS (floating operations per second) measure of processing speed of
supercomputer
131. Mossbauer effect refers to condition where nucleus is stimulated to emit
very sharply defined beams of gamma rays
132. Power loss copper loss133. When motor is overloaded it will overheat
134. The speed of a three phase motor can be increased by decreasing the
external resistance in the rotor circuit
135. Microelectronics general term for miniature electronics