PRI Quizzes

You are going to maintain an electrical equipment and you are now installing a temporary grounding equipment before doing the maintenance. What cable size in AWG should you use to withstand a fault current of 15,000A for 0.5 sec.?

• 1/0

• 2/0

• 3/0

• 4/0

Answer explanation

What do you call a device that combines essential features of a voltmeter, ammeter, and ohmmeter into a single unit?

• Megger

• phase sequence meter

• caliper

• multimeter

What part of the multimeter protects fingers and hands from shock?

(a)  

While doing maintenance work in a railway substation, you are required to test the voltage using multi-meter. How will you connect the probes to the device under test?

(a)  

You are performing a winding resistance test when suddenly a red light turns on in the display screen. What does this indicates?

• This means connect the test probes to the appropriate input ports.

• This means unsafe mode. You should not remove any cables.

• This means that the system is in safe standby mode and ready for handling test leads and connections.

• This means that the device under test is in good working condition.

How do voltage detector works?

• Provides a safe passageway of fault current to the ground.

• Allows the user to open and close a clamping hook mechanism.

• Used for the measurement of contact wire height and stagger.

• Provides the operator with a visual and audible warning if voltage is present.

What part of electronic type megger where test probes are inserted?

• Display Screen

• Indicators

• Input ports

• Selector Switch

Which of the following tools will you use to conduct insulation resistance test?

• Clamp meter

• Digital low-resistance ohmmeter

• Megaohmmeter

• Winding Resistance Meter

What name does Manila Railroad Company adopted when it was given a new charter under Republic Act No. 4156, s. 1964?

• Manila Electric Company

• Light Rail Transit Authority

• Philippine National Railway

• Department of Transportation- Railway Sector

Which among the following projects is considered as hard infrastructure rail projects?

I. Metro Manila Subway Project

II. AFCS Project

III. MRT Line 7

IV. Philippine Railways Institute

• I only

• I,II,III only

• II & IV only

• I & III only