Quiz về rơ le PMR-44

How many indicator lights does the PMR relay have?

• 4

• 3

• 2

• None

How many pairs of contacts does the PMR-44 relay have?

• 2 normally closed, 1 normally open

• 2 normally open, 1 normally closed

• 2 normally open, 2 normally closed

• 1 normally closed, 1 normally open

How many wiring positions does the PMR-44 relay have?

• 5

• 6

• 7

• 3

What is the maximum control voltage of the PMR-44 relay?

• 440V

• 380 V

• 4 KV

• 480V

What is the frequency of the current used by the PMR-44?

• 50 Hz

• 60 Hz

• 70 Hz

• Both a and b

Which company manufactures the PMR-44 relay?

• Sneider Electric

• Siemens

• CHINT

• Selec

When the circuit operates with sufficient voltage and correct phase order, what will be the state of contacts 95-96, 95-98 of the PMR-44?

• 95-96 open, 95-98 closed

• 95-96 closed, 95-98 open

• 95-96 closed, 95-98 closed

• All three options are incorrect

When no power is supplied, what will be the state of contacts 95-96, 95-98 of the PMR-44?

• 95-96 open, 95-98 closed

• 95-96 closed, 95-98 open

• 95-96 open, 95-98 open

• All three options are incorrect

When the circuit loses one phase of power, what will be the state of contacts 95-96, 95-98 of the PMR-44?

• 95-96 open, 95-98 closed

• 95-96 closed, 95-98 open

• 95-96 open, 95-98 open

• All three options are incorrect