ESCO ACTUAL CERTIFICATION PAPER
2026 QUESTIONS WITH ANSWERS FULL
SOLUTION.
■ What would be the result if a 24 volt, 20 ohm contactor coil was wired
in series with a 24 volt, 200 ohm control relay? Ans- B.Only the control
relay would operate
■ Three defrost heaters, each 15 ohms, are wired in parallel to a 120 volt
power supply. How many Watts are consumed? Ans- C. 2880
■ When testing a capacitor with an analog or digital ohmmeter, the
meter should:. Ans- B.Measure low resistance then return to a high
reading
■ How much resistance must be placed in a 120 volt circuit to limit the
current to 2 amps? Ans- A.60 ohms
■ What is resistance? Ans- A.Opposition to electron flow
■ In electrical wiring, a black colored wire indicates:. Ans- A. A hot
conductor
, ■ How many watts are used by a heater operating on 460 volts and
drawing 5 amps? Ans- D .2300
■ How are fuses sized? Ans- D .Both A and B
■ What is generally considered the maximum allowable supply voltage
variation. Ans- A.5%
■ Capacitors are rated in:. Ans- D .Both B and C
■ What is the term used to describe the output side of a transformer?
Ans- D .Secondary side
■ One horsepower is equal to ______ watts.. Ans- B. 746
■ A parallel circuit contains an 18 ohm and a 9 ohm resistor. What is the
total resistance? Ans- A.6 ohms
■ In a series circuit, the voltage drop across each load will:. Ans- D .Add
up to equal the source voltage
■ Which of the following is equal to 2.1kW? Ans- c .2100 watts
2026 QUESTIONS WITH ANSWERS FULL
SOLUTION.
■ What would be the result if a 24 volt, 20 ohm contactor coil was wired
in series with a 24 volt, 200 ohm control relay? Ans- B.Only the control
relay would operate
■ Three defrost heaters, each 15 ohms, are wired in parallel to a 120 volt
power supply. How many Watts are consumed? Ans- C. 2880
■ When testing a capacitor with an analog or digital ohmmeter, the
meter should:. Ans- B.Measure low resistance then return to a high
reading
■ How much resistance must be placed in a 120 volt circuit to limit the
current to 2 amps? Ans- A.60 ohms
■ What is resistance? Ans- A.Opposition to electron flow
■ In electrical wiring, a black colored wire indicates:. Ans- A. A hot
conductor
, ■ How many watts are used by a heater operating on 460 volts and
drawing 5 amps? Ans- D .2300
■ How are fuses sized? Ans- D .Both A and B
■ What is generally considered the maximum allowable supply voltage
variation. Ans- A.5%
■ Capacitors are rated in:. Ans- D .Both B and C
■ What is the term used to describe the output side of a transformer?
Ans- D .Secondary side
■ One horsepower is equal to ______ watts.. Ans- B. 746
■ A parallel circuit contains an 18 ohm and a 9 ohm resistor. What is the
total resistance? Ans- A.6 ohms
■ In a series circuit, the voltage drop across each load will:. Ans- D .Add
up to equal the source voltage
■ Which of the following is equal to 2.1kW? Ans- c .2100 watts
