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 oscilloscope
6.
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 sensor
15.
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.
Child’s law – variation of voltage and
current values
24.
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 welding
32.
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
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 beam
42.
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 HDL
50.
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-AMPS
59.
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
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 unsaturated
77.
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 doubler
86.
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/dc
94.
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
robot
103.
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
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 impedance
110.
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 cable
118.
De sauty’s
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 program
126.
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 loss
133.
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
0 comments:
Post a Comment