List of top Electronics and Communication Engineering Questions asked in AP ECET ECE

The SSB-SC can be obtained from balanced modulator by connecting at its output a
Which of the following circuits is an indirect method of generating FM?
The function of a pre-emphasis circuit in a communication system is to boost
A 1000 kHz carrier is simultaneously modulated with 300 Hz and 250 Hz audio waves. Which of the following frequencies will not be present in the output?
Turn-off of an SCR, it is necessary to reduce its current to less than
The working principle of SMPS is based on
In a parallel inverter
The two transistors in a SCR consists of following transistors
Correct Marks: 1 Wrong Marks: 0
Which of the following is active transducer?
What type of transducer is used to convert force into electrical signals?
Consider the following statements in respect to a solar cell (i) a solar cell is a large area p-n junction (ii) in a solar cell the p-n junction is near the surface (iii) a solar cell is a photovoltaic device Which of the statements given above are correct?
The characteristic equation of a closed loop control system is given as \(s^2 + 4s + 16 = 0\). The natural frequency in rad/s of the system is
Which of the following can be used to produce a square waveform?
Natural frequency of unity feedback control system of transfer function \( G(s)=\frac{10}{s(s+1)} \) is
Which of the following signals are generated by Wien-bridge oscillators?
What is the function of a signal generator?
The phenomenon of injection electro luminescence is the basis of working of
The function of Q-meter is to measure
Resistances can be measured with the help of
The horizontal plates of CRO is supplied with following to observe the waveform
Three heaters have resistances \(30\Omega, 60\Omega\) and \(20\Omega\) respectively. The p.d. across the 60\(\Omega\) and 30\(\Omega\) resistors respectively when they are connected in series and supply voltage is 600V is
Which of the following is a temperature measurement element?
In broadcast television, the number of scanning per frame is chosen to be an odd number to
The bandwidth of a tuned circuit is
A transmission line has a VSWR of 2 then the reflection coefficient is