1|Page
NOCTI Sample Questions with 100% Verified
Answers 2026
Electrical and Electronics Fundamentals
Verified
Question Calculation/Principle
Answer
What fire
Class C extinguishers are
extinguisher
for fires involving
should be used Class C
energized electrical
on an electrical
equipment.
fire?
When should a
Move only if necessary to
person with a Immediate
prevent further harm
serious Danger
(e.g., still in contact with
electrical injury Only
the source).
be moved?
A Provides an equipotential
Use this to Grounded path to safely dissipate
prevent static Mat static charge.
, 2|Page
Verified
Question Calculation/Principle
Answer
electricity
damage?
This symbol
indicates what?
| Resistor | Standard symbol for a fixed resistor in a schematic.
|
| Which resistor will dissipate the least power when 2 resistors
are parallel? | Larger Value Resistor | In a parallel circuit,
voltage ($V$) is constant. Power dissipated is $P = V^2 / R$.
Since $V$ is the same, the larger the $R$, the smaller the $P$. |
| This diagram that represents what type of transformer? |
Isolation | An isolation transformer has a 1:1 turn ratio,
providing electrical isolation between primary and secondary
circuits. |
| How much current is going through 15.5 volts with a 5 Ohms
resistance? | 3.1 Amps | Ohm's Law: $I = V / R = 15.5 \, \text{V}
/ 5 \, \Omega = 3.1 \, \text{A}$. |
NOCTI Sample Questions with 100% Verified
Answers 2026
Electrical and Electronics Fundamentals
Verified
Question Calculation/Principle
Answer
What fire
Class C extinguishers are
extinguisher
for fires involving
should be used Class C
energized electrical
on an electrical
equipment.
fire?
When should a
Move only if necessary to
person with a Immediate
prevent further harm
serious Danger
(e.g., still in contact with
electrical injury Only
the source).
be moved?
A Provides an equipotential
Use this to Grounded path to safely dissipate
prevent static Mat static charge.
, 2|Page
Verified
Question Calculation/Principle
Answer
electricity
damage?
This symbol
indicates what?
| Resistor | Standard symbol for a fixed resistor in a schematic.
|
| Which resistor will dissipate the least power when 2 resistors
are parallel? | Larger Value Resistor | In a parallel circuit,
voltage ($V$) is constant. Power dissipated is $P = V^2 / R$.
Since $V$ is the same, the larger the $R$, the smaller the $P$. |
| This diagram that represents what type of transformer? |
Isolation | An isolation transformer has a 1:1 turn ratio,
providing electrical isolation between primary and secondary
circuits. |
| How much current is going through 15.5 volts with a 5 Ohms
resistance? | 3.1 Amps | Ohm's Law: $I = V / R = 15.5 \, \text{V}
/ 5 \, \Omega = 3.1 \, \text{A}$. |
