ECT 1 Flashcards
1
Q
circular opening through floor structure
A
Sleeve/Pipe Sleeve
2
Q
circular opening through floor structure
A
Sleeve/Pipe Sleeve
3
Q
Stranded steel wire not part of conduction system
A
messenger
4
Q
Cord capable of handling short circuit
A
Type SP-1 flexible Cord
5
Q
Configuration noted for stability in RF amplifier circuits
A
common-base
6
Q
this side of tranisstor is NEVER iniput
A
collector
7
Q
point where gain is 70.7
A
Alpha cutoff
8
Q
most sensitive to transients in PSU
A
diodes
9
Q
quick break type fuse
A
straight wire fuse
10
Q
zener voltage is also known as
A
avalanche voltage
11
Q
causes objectionable signal distortion
A
diode audio limiter circuit
12
Q
minimizes diode capacitance
A
I-layer in PIN diode
13
Q
Diode commonly used in microwave radios
A
IMPATT Diode
14
Q
communications device
A
gunnplexer
15
Q
produces coherent radiation
A
LASER
16
Q
what gate ALWAYS has predictable output
A
JK Flip Flop
17
Q
electrode in the ground for purpose of establishing LOW Resistance w/ Earth
A
made ground
18
Q
ways to decrease earth resistance in made ground
A
- lengthen ground-electrode
- multiple rods
- treat the soil
19
Q
project area on cylindrical surfaces
A
60%
20
Q
wind velocity such it be taken as “medium” stress
A
200kph
21
Q
breaking strength not less than 155 kg
A
18 AWG
22
Q
Tower Radial conuctor
A
8 aWG
23
Q
grounding conudctor for buildings or tower ground or lightning rods
A
2 AWG
24
Q
wire seize must be protected against mechanical injury/vibration during service handling
A
> AWG 24
25
outoddr plant safety, EARTH Restistance ___ with intervals of _____
26
manholes earth resistance
27
divergence of exit beams
pi steradians
28
damage to reproductive cells
genetic
29
leakage radiation at 1 meter of x-ray
100mR/hr
30
vertical clearance above pedestrian walkways (w/ sheath)
3.4m
31
vertical clearance of open wire conductors
3m
32
light duty arresters for protectino of branch circuits not exceeding ____
5kA
33
____batteries require explosion ressistant vents
10 Ah
34
____batteries have to be isolated
5 kW
35
minimu diamter of shank for wooden pins
30mm
36
minimum diameter of shank for metal pins
11.5mm
37
minimum diameter of cross arms
7.5cm x 11.5cm
38
assumed resistance of human body
1500 ohms
39
number of rectifiers needed to elimnate acoustic noise
2 rectifiers
40
separation in fenced railway
3m
41
swimming pool guy
4.9m
42
steel yield point
23.2 kg/mm2
43
direct method uses
two terminal test
44
potential difference b/n two reachable points
45 Vrms; 135Vdc
45
current through 1500 ohm is considered HAZARDOUS
30mA AC, 90mA DC
46
amplitude of suond pressure of 2x10-4 microbar at 1kHz must be less than ____
120 dB
47
how much current causes fibrilation
30 mA
48
a "guy in proximity" is condsidered as
49
type of telephone cable w/ corrugated aluminum tape appiled longtudinally w/ polyethylene jacket overall
Alpeth
50
transition from glow to arc discharge
51
used for pins & fasteners
Galvanized steel/ galvanized iron/ any corrosion-resisting material
52
Percentage of copper in ETP Wires, Swtiches, and Terminals
99.95%
53
suitable for brass solderint
lead-zinc, lead-antimony, zinc-antimony
54
thermal conductivy and electrical conductivity of aluminujm with respect to copper
75%
55
distance of technician to movile xray
2m
56
radiation 5 cm from tv receiver
0.5 mR/hr
57
resistance factor above 100kV
2000 ohm/V
58
maximum length of single conuit b/n junction boxes
27.5m
59
cable conuctors are considered exposed when potential possible contact w/ power lines of ___volts
300 volts
60
Stranded steel wire not part of conduction system
messenger
61
Cord capable of handling short circuit
Type SP-1 flexible Cord
62
Configuration noted for stability in RF amplifier circuits
common-base
63
this side of tranisstor is NEVER iniput
collector
64
point where gain is 70.7
Alpha cutoff
65
most sensitive to transients in PSU
diodes
66
quick break type fuse
straight wire fuse
67
zener voltage is also known as
avalanche voltage
68
causes objectionable signal distortion
diode audio limiter circuit
69
minimizes diode capacitance
I-layer in PIN diode
70
Diode commonly used in microwave radios
IMPATT Diode
71
communications device
gunnplexer
72
produces coherent radiation
LASER
73
what gate ALWAYS has predictable output
JK Flip Flop
74
electrode in the ground for purpose of establishing LOW Resistance w/ Earth
made ground
75
ways to decrease earth resistance in made ground
- lengthen ground-electrode
- multiple rods
- treat the soil
76
project area on cylindrical surfaces
60%
77
wind velocity such it be taken as "medium" stress
200kph
78
breaking strength not less than 155 kg
18 AWG
79
Tower Radial conuctor
8 aWG
80
grounding conudctor for buildings or tower ground or lightning rods
2 AWG
81
wire seize must be protected against mechanical injury/vibration during service handling
>AWG 24
82
outoddr plant safety, EARTH Restistance ___ with intervals of _____
83
manholes earth resistance
84
divergence of exit beams
pi steradians
85
damage to reproductive cells
genetic
86
leakage radiation at 1 meter of x-ray
100mR/hr
87
vertical clearance above pedestrian walkways (w/ sheath)
3.4m
88
vertical clearance of open wire conductors
3m
89
light duty arresters for protectino of branch circuits not exceeding ____
5kA
90
____batteries require explosion ressistant vents
10 Ah
91
____batteries have to be isolated
5 kW
92
minimu diamter of shank for wooden pins
30mm
93
minimum diameter of shank for metal pins
11.5mm
94
minimum diameter of cross arms
7.5cm x 11.5cm
95
assumed resistance of human body
1500 ohms
96
number of rectifiers needed to elimnate acoustic noise
2 rectifiers
97
separation in fenced railway
3m
98
swimming pool guy
4.9m
99
steel yield point
23.2 kg/mm2
100
direct method uses
two terminal test
101
potential difference b/n two reachable points
45 Vrms; 135Vdc
102
current through 1500 ohm is considered HAZARDOUS
30mA AC, 90mA DC
103
amplitude of suond pressure of 2x10-4 microbar at 1kHz must be less than ____
120 dB
104
how much current causes fibrilation
30 mA
105
a "guy in proximity" is condsidered as
106
type of telephone cable w/ corrugated aluminum tape appiled longtudinally w/ polyethylene jacket overall
Alpeth
107
transition from glow to arc discharge
108
used for pins & fasteners
Galvanized steel/ galvanized iron/ any corrosion-resisting material
109
Percentage of copper in ETP Wires, Swtiches, and Terminals
99.95%
110
suitable for brass solderint
lead-zinc, lead-antimony, zinc-antimony
111
thermal conductivy and electrical conductivity of aluminujm with respect to copper
75%
112
distance of technician to movile xray
2m
113
radiation 5 cm from tv receiver
0.5 mR/hr
114
resistance factor above 100kV
2000 ohm/V
115
maximum length of single conuit b/n junction boxes
27.5m
116
cable conuctors are considered exposed when potential possible contact w/ power lines of ___volts
300 volts
