Shree Cement Assistant Manager Interview Questions and Answers for Experienced

Apply MF on reading when CTR 1200/1 and Analog Ammeter 125/1.

• Calculate the multiplication factor (MF) using the formula MF = CTR / Ammeter rating

• In this case, MF = 1200 / 125 = 9.6

• Apply the MF to the reading obtained from the ammeter to get the actual current

• For example, if the ammeter reading is 50, the actual current would be 50 x 9.6 = 480A

SPRS types include Kramer and Scherbius drive. The difference lies in their power factor correction methods.

• SPRS stands for Static Phase Reversal Switch

• Kramer drive uses capacitors to correct power factor

• Scherbius drive uses a transformer to correct power factor

• Kramer drive is more efficient for low power applications

• Scherbius drive is more efficient for high power applications

Relay setting and coordination involves ensuring proper functioning and communication between different relays.

• Relay setting involves configuring the relay to operate at the desired current and voltage levels.

• Coordination involves ensuring that the relays communicate with each other to prevent false tripping or failure to trip during a fault.

• REM, REF, and Micom are types of relays commonly used in power systems.

• Proper ...read more