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Sunday, 8 April 2018

Electro Technical Officer(ETO) Exam Questions and Answers

Selective Questions and answers for Electro technical officer - ETO. Multiple choice Questions and answer for ETO COC (Certificate for Competency) exam.

1. According to NAND logic gate has ______.

a. High input and a high output
b. Low input and a low output
c. Low input and a high output
d. None of the above

2. What is the use of silicon controlled rectifier (SCR) is a solid-state device used to change ____?

a. AC to DC and control relatively high load current
b. AC to DC and control relatively low load current
c. DC to AC and control relatively low load current
d. DC to AC and control relatively high load current

3. What is the function of transducer's is to _____?

a. Convert one form of energy to another
b. Prevent current flow
c. Transmit electrical energy
d. Produce mechanical energy

4. A varistor is known as _______?

a. A voltage-dependent diode
b. A current-dependent diode
c. A voltage-dependent resistor
d. A current-dependent resistor

5. A memory device that loses its contents when power is lost is ____?

a. Non Volatile
b. Static
c. Volatile
d. Random

6. The function of the varistor incorporated in the excitation system of the alternator is to 

a. Reduce the winding temperature
b. Stabilize voltage
c. Take care of spikes
d. None of the above

7. Which of the following circuits would require the least amount of filtering?

a. A full wave rectifier
b. A rectifier
c. A half wave rectifier
d. A bridge rectifier

8. What is the reason of  Surge voltage originates in power systems due to _______?

a. Switching operations
b. Lighting
d. Any of the above

9. After isolation, LOTO procedures are performed, which electrical device requires any stored electrical energy to be discharged before any work may safely begin?

a. Capaciotr
b. Choke coil
c. Potential transfomer
d. Resistor bank


1. Low input and a high output
2. AC to DC and control relatively high load current
3. Convert one form of energy to another
4. A voltage-dependent resistor
5. Volatile
6. Take care of spikes
7. A bridge rectifier
8. Any of the above
9. Capacitor

Share your answers in the comments box, for authentic rule and regulation of shipping Industry visit DG Shipping website. #cocexam #eto

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