Electronics Engineering - Online Test
Q1. A two loop position control system is shown below
The gain k of the Tacho-generator influences mainly the
Answer : Option A
Explaination / Solution:
Q2. Which one of the following circuits is NOT equivalent to a 2-input XNOR
(exclusive NOR) gate?
Answer : Option D
Explaination / Solution:
All options except option ‘D’ gives EX-NOR gates
Q3. For the circuit shown in the figure, the voltage and current expressions are 
The average power measured by the Wattmeter is
Answer : Option C
Explaination / Solution:
Q4. The typical ratio of latching current to holding current in a 20 A thyristor is
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. Consider the given circuit.
In this circuit, the race around
Answer : Option A
Explaination / Solution:
Q6. Match the following
Answer : Option B
Explaination / Solution:
No Explaination.
Q7. 
The filters F1 and F2 having characteristics as shown in Figures (a) and (b) are connected as shown in Figure (c).
The cut-off frequencies of F1 and F2 are f1 and f2 respectively. If f1 < f2 the resultant
circuit exhibits the characteristics of a
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. The saturation voltage of the ideal op-amp shown below is ±10V. The output voltage v0 of
the following circuit in the steady-state is
Answer : Option A
Explaination / Solution:
Q9. In a GSM system, 8 channels can co-exist in 200 kHz bandwidth using TDMA.
A GSM based cellular operator is allocated 5 MHz bandwidth. Assuming a
frequency reuse factor of 1/5, i.e. a five-cell repeat pattern, the maximum number
of simultaneous channels that can exist in one cell is
Answer : Option B
Explaination / Solution:
Q10. The figure shows the high-frequency capacitance - voltage characteristics of Metal/Sio2/silicon (MOS) capacitor having an area of 1 × 10-4 cm2. Assume that the permittivities (ε0εr) of silicon and Sio are 1 × 10-12 F/cm and 3.5 × 10-13 F/ cm respectively.
The gate oxide thickness in the MOS capacitor is
Answer : Option A
Explaination / Solution:
