ISRO Scientist or Engineer Electronics 2015
For the following questions answer them individually
In a binary source, Os occur three times:as often as 1s. What is the information contained in the 1s?
A bandpass signal occupies the bandwidth 390 KHz to 410 KHz. What minimum sampling frequency would you use from the options giveri below, so as to avoid aliasing?
A 12-bit ADC has input signal range of $$\pm 1 V$$. The signal to quantization noise ratio if a sine wave signal with 0.25 V peak voltage is given as input is:
A 70 MHz carrier is QPSK modulated by a 1.544 Mbps T1 data stream. The transmitter employs a raised-cosine filter with $$\alpha = 0.2$$ What is the transmitted bandwidth of the
signal?
If two tones $$f_1$$, and $$f_2$$, are amplified by a non-linear amplifier, which frequency components would be present in output?
