B+, or supply voltages in electronics products, is considered to be:
A. +5 to +12 VDC
B. 0 to 30 V DC
C. +12 to 300 V DC
D. The anode or plate voltage supply - answersD. The anode or plate voltage supply
Leakage current in an electronic product, between either of the AC power cord conduct...
B+, or supply voltages in electronics products, is considered to be:
A. +5 to +12 VDC
B. 0 to 30 V DC
C. +12 to 300 V DC
D. The anode or plate voltage supply - answersD. The anode or plate voltage supply
Leakage current in an electronic product, between either of the AC power cord conductors and the
chassis or any exposed metals should not exceed _________.
A. 5 microamps
B. 500 microamps
C. 5 milliamps
D. 50 milliamps - answersB. 500 microamps
Shaded components on the electronics schematics mean:
A. Only factory service personnel may change the part
B. Only exact replacement parts may be used
C. The shading makes for better readability
D. High voltage is present on these parts - answersB. Only exact replacement parts may be used
Ingested solder fumes when particles _______.
,A. I'm not harmful to the human body
B. Are toxic
C. From lead-tin solder aren't harmful
D. From tin-alloys are most harmful - answersB. Are toxic
Second degree skin burns should ________.
A. Not be treated with ice and bandage pack
B. Be covered with thick bandages
C. Be treated with cold water or ice
D. Be treated by draining blisters - answersA. Not be treated with ice and bandage pack
Rules describing the fire or toxicity retardant types of cabling which may be installed in buildings is
contained in _________.
A. NEC Article 770
B. UL 569B
C. TIA/EIA standard 578
D. NEMA code 1316 - answersA. NEC Article 770
ESD and static discharge is most destructive to _______.
A. CMOS semiconductors
B. TTL semiconductors
C. Germanium PN junctions
D. Silicon PN junctions - answersA. CMOS semiconductors
,If you have never receive formal training and practice CPR want a pricing or dummy, in the event of
finding a fellow worker not breathing, you _________.
A. Should use what knowledge you do half of the procedure and attempt it
B. Should not attempt it, but call for help
C. Should attempt it after calling for help
D. Should, if handy, read the instructions and attempt in order to save the life - answersB. Should not
attempt it, but call for help
When working at heights above 6 feet, a ________ is required by OSHA rules.
A. Linesman's belt
B. Linesman's belt attached to a lanyard
C. Full body harness attached to a lanyard that prevents more than a 6 foot drop
D. Good insurance policy - answersC. Full body harness attached to a lanyard that prevents more than a
6 foot drop
'Phantom' current is associated with ________.
A. Northern Lights
B. Corona arcing from electrical generators
C. Charge retained by inductors
D. Charge retained by capacitors - answersD. Charge retained by capacitors
The atomic number of an element is the same as the element's atomic weight.
A. True
B. False - answersB. False
An increase in the voltage with resistance held constant causes current to __________.
, A. Decrease
B. Increase twice to value of voltage
C. Increase
D. None of the above - answersC. Increase
The ampere, expresses __________.
A. Volts/sec increase
B. A unit of charge movement per second past a given point
C. Coulombs/charge
D. An increase in resistance - answersB. A unit of charge movement per second past a given point
The total resistance of a parallel circuit containing equal branch resistances is found by the following:
A. By adding all of the branch resistance values
B. By taking the product of all the branch resistance values
C. By dividing the resistance value of a branch by the number of branches
D. The value cannot be found - answersC. By dividing the resistance value of a branch by the number of
branches
A 12 V DC power supply has a 15 ohm internal resistance. What load resistance can you be connected to
transfer maximum power?
A. 15 ohms
B. 20 ohms
C. 10 ohms
D. 5 ohms - answersA. 15 ohms
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