EE GATE 2009 - Online Test
Q1. A field excitation of 20 A in a certain alternator results in an armature current of 400A in short circuit and a terminal voltage of 2000V on open circuit. The magnitude of the internal voltage drop within the machine at a load current of 200A is
Answer : Option D
Explaination / Solution:
Q2. 
The single phase, 50Hz, iron core transformer in the circuit has both the vertical arms of cross sectional area 20cm2 and both the horizontal arms of cross sectional area 10cm2. If the two windings shown were wound instead on opposite horizontal arms, the mutual inductance will
Answer : Option A
Explaination / Solution:
No Explaination.
Q3. 
A 3-phase squirrel cage induction motor supplied from a balanced 3-phase source drives a mechanical load. The torque-speed characteristics of the motor (solid curve) and of the load (dotted curve) are shown. Of the two equilibrium points A and B, which of the following options correctly describes the stability of A and B?
Answer : Option A
Explaination / Solution:
No Explaination.
Q4. Out of the following plant categories
(i) Nuclear
(ii) Run-of-river
(iii) Pump Storage
(iv) Diesel
The base load power plants are
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. The measurement system shown figure uses three sub-system in cascade whose gains are
specified as G1, G2 and 1/G3. The relative small errors associated with each respective
subsystem G1, G2 and G3 are ε1 + ε2 and ε3. The error associated with the output is
Answer : Option C
Explaination / Solution:
No Explaination.
Q6. For a fixed value of complex power flow in a transmission line having a sending end voltage V, the real power loss will be proportional to
Answer : Option C
Explaination / Solution:
Q7. The two inputs of a CRO are fed with two stationary periodic signals. In the X-Y mode, the screen shows a figure which changes from ellipse to circle and back to ellipse with its major axis changing orientation slowly and repeatedly. The following inference can be made from this.
Answer : Option C
Explaination / Solution:
No Explaination.
Q8. How many 200W/220V incandescent lamps connected in series would consume the same total power as a single 100W/220V incandescent lamp?
Answer : Option D
Explaination / Solution:
No Explaination.
Q9. The polar plot of an open loop stable system is shown below. The closed loop system is
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. A Linear Time Invariant system with an impulse response h(t) produces output y(t)
when input x(t) is applied. When the input x (t−τ) is applied to a system with impulse
response h(t − τ), the output will be
Answer : Option D
Explaination / Solution:
No Explaination.
