As per your request, I am giving you question paper for GATE Electrical and Electronics engineering with their solution. Hope it helps.

Leakage flux in an induction motor is
(A) flux that leaks through the machine
(B) flux that links both stator and rotor windings
(C) flux that links none of the windings
(D) flux that links the stator winding or the rotor winding but not both
Answer: (D)

The angle δ in the swing equation of a synchronous generator is the
(A) angle between stator voltage and current
(B) angular displacement of the rotor with respect to the stator
(C) angular displacement of the stator mmf with respect to a synchronously rotating axis.
(D) angular displacement of an axis fixed to the rotor with respect to a synchronously rotating axis.
Answer: (D)

A band-limited signal with a maximum frequency of 5 kHz is to be sampled.
According to the sampling theorem, the sampling frequency in kHz which is not
valid is
(A) 5 (B) 12 (C) 15 (D) 20
Answer (A)

A bulb in a staircase has two switches, one switch being at the ground floor and
the other one at the first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the other switch. The logic of switching of the bulb resembles
(A) an AND gate (B) an OR gate (C) an XOR gate (D)a NAND gate
Answer (C)

A single-phase transformer has no-load loss of 64 W, as obtained from an open- circuit test. When a short-circuit test is performed on it with 90% of the rated currents flowing in its both LV and HV windings, he measured loss is 81 W. The transformer has maximum efficiency when operated at
(A) 50.0% of the rated current. (B) 64.0% of the rated current.
(C) 80.0% of the rated current. (D) 88.8% of the rated current.
Answer: (C)

4-pole induction motor, supplied by a slightly unbalanced three-phase 50Hz source, is rotating at 1440 rpm. The electrical frequency in Hz of the induced negative sequence current in the rotor is
(A) 100 (B) 98 (C) 52 (D) 48
Answer: (B)

The system is
(A) controllable but not observable
(B) not controllable but observable
(C) both controllable and observable
(D) both not controllable and not observable
Answer: (A)


The Peak to Peak source current ripple in amps is
(A) 0.96 (B) 0.144 (C) 0.192 (D) 0.288
Answer: (C)
GATE EEE question paper with solution





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