Q1.During transmission over a certain binary communication channel, bit errors occur independently with probability p. The probability of AT MOST one bit in error in a block of n bits is given by
Answer : Option BExplaination / Solution:
Any device which converts energy from one form to another is called a transducer.It converts variation in physical quantities such as pressure,dispalcement,force,temprature etc.Like microphone converts sound signal into an electrical signal.
Q3.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
Q4.Which of these can be used to convert position signals to electrical signals?
Answer : Option BExplaination / Solution:
Potentiometer is device which can be used to measure and control frequency,temprature etc.Hence changing frequency in signal coverts it into electrical signal.
Q5.In a Direct Sequence CDMA system the chip rate is 1.2288 × 106 chips per
second. If the processing gain is desired to be AT LEAST 100, the data rate
Q7.An air-filled rectangular waveguide has inner dimensions of 3 cm × 2 cm.
The wave impedance of the TE2 mode of propagation in the waveguide at a
frequency of 30 GHz is (free space impedance η0 = 377Ω)
Answer : Option DExplaination / Solution:
A force transducer is also known as a force sensor this converts an input mechanical force into output electrical signal.Hence a force transducer is used in digital weighing balance.
Answer : Option BExplaination / Solution:
In communication a signal implies a time varying electrical signal obtained by transforming original signal with the help of a suitable transducer.It is single valued function of time that conveys the information.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0