16.

17

18.

19.

21.

23.

24.

25,

Positive sequence impedance of a transformer is :

(५) 2 times greater than negative sequence impedance
(8) வம to negative sequence impedance

(C) half of negative sequence impedance

(D) none of the above

Two parallel alternators each rated 11 kV 50 MVA and each having a subtransient reactance
of 15% are connected to a bus bar, What is the fault level for a fault on one of the feeders
near the bus bar ?

(A) 66667 MVA © 33333 MVA (C) 13335 MVA (D) 100 MVA

The positive sequence and zere sequence impedance of a generator सर X, and X, respectively
and its neutral is grounded through a reactance Xn, A single line to ground fault is more
severe than a three phase fault at its terminals when ?

(५) Xn=X,-X, © Xn=3(X,-X)
)© Xn> 13 (X-X) ത) Xn< 13 ‏وا- ہم‎

A schedule speed of 45 km/h is required between two stops 1.5 km apart. If the stopis 205
duration, what is the actual time of run for the train ?

(A) 120 (8) 60s (€) 100 5 (D) ೫೬

What is the supply voltage of electric traction in Kerala 7
(മ) 11KV AC © ‏ع تعمد‎ |) 1000V DC (D) 25 kV AC

What is the decimal number for 10101 ?
(ஙி 1 ® 22 (9) 28 യു 91

Which gate is known as inverter gate ?
(A) AND നദ OR (೧) ೫೦ (D) NAND

Which of the following is a binary storage device ?
(ಗಿ) diode (B) flipflop € भा (D) SCR

The address of a memory location of Intel 8085 microprocessor is :
(ക) 81% (ए) 16 bit (C) 321 (D) 64 bit

A vollage of V is applied across an RLC series circuit. A voltmeter is connected across
L and C. What will be the reading of voltmeter at resonance ۶

(മ) 2ഈ ® v (0 2% (D) 05V

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