Which of the following leads to the 3G evolution of GSM, IS-136 and PDC systems?
a) GPRS
b) HSCSD c) W-CDMA d) EDGE

Which of the most widely used model for signal prediction in urban areas?
a) Okumura model
b) Attenuation factor model c) Ericsson Multiple Breakpoint Model d) Log distance path loss model

_________ is a non linear circuit that converts DC power to an AC waveform of desired frequency based on the oscillator design.
a) Attenuator
b) Amplifier c) Oscillator d) None of the mentioned

The transfer function of an RF oscillator is given by:
a) A/ (1-AH (ω))
b) A/ (1+AH (ω)) c) A/ (-1+AH (ω)) d) 1/ (1-AH (ω))

The criterion on which oscillations are produced in the oscillator circuit is called:
a) Shannon’s criteria
b) Barkhausen criteria c) Colpitts criteria d) None of the mentioned

The necessary condition for oscillation in a Colpitts oscillator is:
a) C2/C1=gm/Gi
b) C1/C2=gm/Gi c) C2/C1= gm*Gi d) None of the mentioned

An inductor is operating at frequency of 50 MHz. Its inductance is 0.1 µH, and then the series resistance associated with the inductor is: (Qo=100)
a) 0.31 Ω
b) 1.32 Ω c) 1 Ω d) 1.561 Ω

Hartley oscillator has inductance values of 12 mH and 4 mH in the feedback section and a capacitor of 4 nF. Then the resonant frequency of the circuit is:
a) 19.89 kHz
b) 25 kHz c) 45 kHz d) 12 kHz

Which of the following is a type of digital logic circuit?
a) Combinational logic circuits
b) Sequential logic circuits c) Both a & b d) None of the mentioned

What is a switching function that has more than one output called in Digital Electronics?
a) Multi-gate function
b) Multi-output function c) Multiple-gate function d) Multiple-output function

What must be used along with synchronous control inputs to trigger a change in the flip flop?
a) 0
b) 1 c) Clock d) Previous output

What will be the output from a D flip – flop if the clock is low and D = 0?
a) 0
b) 1 c) No change d) Toggle between 0 and 1

What are the basic gates in MOS logic family?
a) NAND and NOR
b) AND and OR c) NAND and OR d) AND and NOR

What is the minimum distance required for single error detection according to Hamming’s analysis in Digital Electronics?
a) 1
b) 2 c) 3 d) 4

What input should be given to “S” when SR flip – flop is converted to JK flip – flop?
a) K.Q
b) K.Q c) J.Q d) J.Q

What is the group of 1s in 4 cells of a K – map called?
a) Pair
b) Quad c) Octet d) Octave

In Digital Circuits, which of the following options represent the synchronous control inputs in a T flip flop?
a) T
b) 0 c) Clock d) 1

What is Microbiology?
a) Study of molecules that are visible to human eyes
b) Study of animals and their family c) Study of organisms that are not visible to naked eyes d) Study of microscope

Which microorganism(s) among the following perform photosynthesis by utilizing light?
a) Cyanobacteria, Fungi and Viruses
b) Viruses c) Cyanobacteria d) Fungi

Which of the following is used in electron microscope?
a) electron beams and magnetic fields
b) light waves c) magnetic fields d) electron beams

The respiratory chain of bacteria is associated with the _____________
a) cytoplasmic membrane
b) cell wall c) cytoplasm d) mitochondrial membrane