DC Thermal Relay

DC Thermal Relay

University

9 Qs

quiz-placeholder

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DC Thermal Relay

DC Thermal Relay

Assessment

Quiz

Special Education

University

Hard

Created by

kalaivani c

Used 1+ times

FREE Resource

9 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

How does the DC thermal relay operate?
a. Using electromagnetic attraction
b. Using thermal energy
c. Using electrical energy
d. Using chemical reactions

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following is a disadvantage of using a DC thermal relay?
a. They are expensive
b. They require regular maintenance
c. They are not reliable in extreme temperatures
d. They have a short lifespan

3.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the main application of DC thermal relays?
a. In low voltage circuits
b. In high voltage circuits
c. In power transformers
d. In electric motors

4.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Which of the following is a common type of DC thermal relay?
a. Type M
b. Type K
c. Type B
d. Type R

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

How does the reset button of a DC thermal relay work?
a. It switches off the power supply to the relay
b. It resets the thermal element
c. It activates the magnetic coil
d. It changes the contact position

6.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the primary function of a DC thermal relay?
a. To protect electrical equipment from overload
b. To provide voltage regulation
c. To prevent electrical fires
d. To maintain power factor

7.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the thermal element made of in a DC thermal relay?
a. Copper
b. Aluminum
c. Iron
d. Nichrome

8.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which of the following factors affects the operation of a DC thermal relay?
a. Ambient temperature
b. Humidity
c. Voltage level
d. Frequency

9.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the time delay in a DC thermal relay?
a. The time it takes for the thermal element to heat up
b. The time it takes for the magnetic coil to activate
c. The time it takes for the contacts to change position
d. The time it takes for the reset button to work