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The status flags of 8085 microprocessor that is not affected during the execution of DCR
instruction.

(A) Carry Flag (B) Parity Flag

(C) Auxiliary Carry Flag (D) Sign Flag
The incrementer/decrementer address latch register in 8085 is:

(A) 2bit (B) 4 bit

(C) 8 bit (0) 16 bit

If a transmission of characteristic impedance 200 Q is terminated with a load impedance of
400 + j200 Q, then the normalized impedance is:

(^) -1 + ൯) 427
(0 1-0 60) 257

A 33 kV system has string insulator having 3 discs and the earth to disc capacitance ratio
of 0.10. The string efficiency will be:

(ಸ) 75% (8) 89%
(0 55% (D) 67%

Voltage at which corona glow occurs is known as:
(A) Visual Natural voltage (B) Visual disruptive voltage
(C) Visual critical voltage (D) Visual high voltage

A three phase circuit breaker is rated 2000 MVA, 33 kV. What will be the making current?

(A) 39kA (B) 59kA
(C) 70kA (D) 89kA
The dielectric strength of SF6 circuit breaker is that of air.
(A) Same as (3) 2to3 times
(C) 10 times (D) 5to6 times

Which relay is used in protection of long transmission lines?
(^) Mho relay ൯) Reactance relay
(C) Impedance relay (D) Buchholz relay

If for an IDMT relay with a plug setting of 50% and a CT ratio of 400/5, the current is 3000A,
then the plug setting multiplier would be:

(A) (B) 15.0
(C) 18.75 (0) 387.5

9 225/2023
[P.T.0.]

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