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ECT > ECT 1 > Flashcards

ECT 1 Flashcards

1
Q

circular opening through floor structure

A

Sleeve/Pipe Sleeve

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2
Q

circular opening through floor structure

A

Sleeve/Pipe Sleeve

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3
Q

Stranded steel wire not part of conduction system

A

messenger

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4
Q

Cord capable of handling short circuit

A

Type SP-1 flexible Cord

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5
Q

Configuration noted for stability in RF amplifier circuits

A

common-base

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6
Q

this side of tranisstor is NEVER iniput

A

collector

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7
Q

point where gain is 70.7

A

Alpha cutoff

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8
Q

most sensitive to transients in PSU

A

diodes

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9
Q

quick break type fuse

A

straight wire fuse

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10
Q

zener voltage is also known as

A

avalanche voltage

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11
Q

causes objectionable signal distortion

A

diode audio limiter circuit

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12
Q

minimizes diode capacitance

A

I-layer in PIN diode

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13
Q

Diode commonly used in microwave radios

A

IMPATT Diode

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14
Q

communications device

A

gunnplexer

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15
Q

produces coherent radiation

A

LASER

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16
Q

what gate ALWAYS has predictable output

A

JK Flip Flop

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17
Q

electrode in the ground for purpose of establishing LOW Resistance w/ Earth

A

made ground

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18
Q

ways to decrease earth resistance in made ground

A
  • lengthen ground-electrode
  • multiple rods
  • treat the soil
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19
Q

project area on cylindrical surfaces

A

60%

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20
Q

wind velocity such it be taken as “medium” stress

A

200kph

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21
Q

breaking strength not less than 155 kg

A

18 AWG

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22
Q

Tower Radial conuctor

A

8 aWG

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23
Q

grounding conudctor for buildings or tower ground or lightning rods

A

2 AWG

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24
Q

wire seize must be protected against mechanical injury/vibration during service handling

A

> AWG 24

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25
Q

outoddr plant safety, EARTH Restistance ___ with intervals of _____

A
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26
Q

manholes earth resistance

A
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27
Q

divergence of exit beams

A

pi steradians

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28
Q

damage to reproductive cells

A

genetic

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29
Q

leakage radiation at 1 meter of x-ray

A

100mR/hr

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30
Q

vertical clearance above pedestrian walkways (w/ sheath)

A

3.4m

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31
Q

vertical clearance of open wire conductors

A

3m

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32
Q

light duty arresters for protectino of branch circuits not exceeding ____

A

5kA

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33
Q

____batteries require explosion ressistant vents

A

10 Ah

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34
Q

____batteries have to be isolated

A

5 kW

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35
Q

minimu diamter of shank for wooden pins

A

30mm

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36
Q

minimum diameter of shank for metal pins

A

11.5mm

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37
Q

minimum diameter of cross arms

A

7.5cm x 11.5cm

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38
Q

assumed resistance of human body

A

1500 ohms

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39
Q

number of rectifiers needed to elimnate acoustic noise

A

2 rectifiers

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40
Q

separation in fenced railway

A

3m

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41
Q

swimming pool guy

A

4.9m

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42
Q

steel yield point

A

23.2 kg/mm2

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43
Q

direct method uses

A

two terminal test

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44
Q

potential difference b/n two reachable points

A

45 Vrms; 135Vdc

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45
Q

current through 1500 ohm is considered HAZARDOUS

A

30mA AC, 90mA DC

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46
Q

amplitude of suond pressure of 2x10-4 microbar at 1kHz must be less than ____

A

120 dB

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47
Q

how much current causes fibrilation

A

30 mA

48
Q

a “guy in proximity” is condsidered as

A
49
Q

type of telephone cable w/ corrugated aluminum tape appiled longtudinally w/ polyethylene jacket overall

A

Alpeth

50
Q

transition from glow to arc discharge

A
51
Q

used for pins & fasteners

A

Galvanized steel/ galvanized iron/ any corrosion-resisting material

52
Q

Percentage of copper in ETP Wires, Swtiches, and Terminals

A

99.95%

53
Q

suitable for brass solderint

A

lead-zinc, lead-antimony, zinc-antimony

54
Q

thermal conductivy and electrical conductivity of aluminujm with respect to copper

A

75%

55
Q

distance of technician to movile xray

A

2m

56
Q

radiation 5 cm from tv receiver

A

0.5 mR/hr

57
Q

resistance factor above 100kV

A

2000 ohm/V

58
Q

maximum length of single conuit b/n junction boxes

A

27.5m

59
Q

cable conuctors are considered exposed when potential possible contact w/ power lines of ___volts

A

300 volts

60
Q

Stranded steel wire not part of conduction system

A

messenger

61
Q

Cord capable of handling short circuit

A

Type SP-1 flexible Cord

62
Q

Configuration noted for stability in RF amplifier circuits

A

common-base

63
Q

this side of tranisstor is NEVER iniput

A

collector

64
Q

point where gain is 70.7

A

Alpha cutoff

65
Q

most sensitive to transients in PSU

A

diodes

66
Q

quick break type fuse

A

straight wire fuse

67
Q

zener voltage is also known as

A

avalanche voltage

68
Q

causes objectionable signal distortion

A

diode audio limiter circuit

69
Q

minimizes diode capacitance

A

I-layer in PIN diode

70
Q

Diode commonly used in microwave radios

A

IMPATT Diode

71
Q

communications device

A

gunnplexer

72
Q

produces coherent radiation

A

LASER

73
Q

what gate ALWAYS has predictable output

A

JK Flip Flop

74
Q

electrode in the ground for purpose of establishing LOW Resistance w/ Earth

A

made ground

75
Q

ways to decrease earth resistance in made ground

A
  • lengthen ground-electrode
  • multiple rods
  • treat the soil
76
Q

project area on cylindrical surfaces

A

60%

77
Q

wind velocity such it be taken as “medium” stress

A

200kph

78
Q

breaking strength not less than 155 kg

A

18 AWG

79
Q

Tower Radial conuctor

A

8 aWG

80
Q

grounding conudctor for buildings or tower ground or lightning rods

A

2 AWG

81
Q

wire seize must be protected against mechanical injury/vibration during service handling

A

> AWG 24

82
Q

outoddr plant safety, EARTH Restistance ___ with intervals of _____

A
83
Q

manholes earth resistance

A
84
Q

divergence of exit beams

A

pi steradians

85
Q

damage to reproductive cells

A

genetic

86
Q

leakage radiation at 1 meter of x-ray

A

100mR/hr

87
Q

vertical clearance above pedestrian walkways (w/ sheath)

A

3.4m

88
Q

vertical clearance of open wire conductors

A

3m

89
Q

light duty arresters for protectino of branch circuits not exceeding ____

A

5kA

90
Q

____batteries require explosion ressistant vents

A

10 Ah

91
Q

____batteries have to be isolated

A

5 kW

92
Q

minimu diamter of shank for wooden pins

A

30mm

93
Q

minimum diameter of shank for metal pins

A

11.5mm

94
Q

minimum diameter of cross arms

A

7.5cm x 11.5cm

95
Q

assumed resistance of human body

A

1500 ohms

96
Q

number of rectifiers needed to elimnate acoustic noise

A

2 rectifiers

97
Q

separation in fenced railway

A

3m

98
Q

swimming pool guy

A

4.9m

99
Q

steel yield point

A

23.2 kg/mm2

100
Q

direct method uses

A

two terminal test

101
Q

potential difference b/n two reachable points

A

45 Vrms; 135Vdc

102
Q

current through 1500 ohm is considered HAZARDOUS

A

30mA AC, 90mA DC

103
Q

amplitude of suond pressure of 2x10-4 microbar at 1kHz must be less than ____

A

120 dB

104
Q

how much current causes fibrilation

A

30 mA

105
Q

a “guy in proximity” is condsidered as

A
106
Q

type of telephone cable w/ corrugated aluminum tape appiled longtudinally w/ polyethylene jacket overall

A

Alpeth

107
Q

transition from glow to arc discharge

A
108
Q

used for pins & fasteners

A

Galvanized steel/ galvanized iron/ any corrosion-resisting material

109
Q

Percentage of copper in ETP Wires, Swtiches, and Terminals

A

99.95%

110
Q

suitable for brass solderint

A

lead-zinc, lead-antimony, zinc-antimony

111
Q

thermal conductivy and electrical conductivity of aluminujm with respect to copper

A

75%

112
Q

distance of technician to movile xray

A

2m

113
Q

radiation 5 cm from tv receiver

A

0.5 mR/hr

114
Q

resistance factor above 100kV

A

2000 ohm/V

115
Q

maximum length of single conuit b/n junction boxes

A

27.5m

116
Q

cable conuctors are considered exposed when potential possible contact w/ power lines of ___volts

A

300 volts

ECT (1 decks)

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