**APGenco Question Papers 2009.**

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** Kirchoff’s nodal equations based on the principle of

** If the Supply voltage is increased by n times, the cross section of conducter will [increase/decrease] by ________ times ?

** Memory word size of 8085 microprocessor?

** Flip flop used in shift register

** And gate

** Static electricity is formed for?

** Cc has current gain and input impedance ?

** If geta=1, the roots of cequ are

** For a 6db attenuator , if input power is 100MW ,o/p power will be =?

** For a perfectly matched tx line , reflection coefficient=?

** Radiation pattern of isotropic radiator is

** Amplitude limiter essentially a

** Waveguide acts as

** The Frequency is measured by _________ bridge ?

** x-band rangeis

** reflection coefficient is zero , then the line is

** Dynamic memory cells are constructed using

** Which of the following is most efficient

** Which of the following has higher bandwidth

** Essential channel capacity is a measure of

** Lossless line condition is?

** The Source internal resitanse Rs , When equal to Load resistance RL, the maximum transfered is of _____ % of input power?

** Typical bit rate of keyboard devices ?

** 16 in octal s/m is?

** No of bits represents 16 is

** F(t)=t e at, F(S)=?

** F(S)=1/(s+a)2, f(t) =?

** 16 bit width ,8085 mapps ans 64kilobytes

** Which of the following flipflop doesn’t have race problem?

** Dominant mode TE10

** Wave length in waveguide equal to ,greater than , lessthan ,independent of free space wave length

** Half adder has how many ips and ops

** Magnetron is

** Bethe-hole coupler uses

** Power gain=40 : Voltage gain=200 : Current gain=?

** Tfunction=k(s+1)/s(s-2+j3)(s-2-j3), no of poles=?

** Tfuncion 1-s/1+s , it is known as

** G=k/s2(1+sT)then order and type=?

** Which of the following component is passive and reciprocal

** Broad side array interelement phase shift is

** R=100ohms,C=100pf, TIME CONST=?

** Isotropic antenna gain is

** In one timeconstant the final value increases by _____________value

** ABCD PARAMETERS of ELECTRICAL SYMMETRY: Ad-bc=1

** s-equation of L DI/DT

** In a CE amplifier ,if a C.E voltage increase

** Transfer function has 2poles on L.HS PLANE and 2zeros on r h s plane this results

** The gain at corner frequency is?

** t.v s/m am- picture,fm-sound

** code used in teleprinter

** Bandwidth =resonant frequency/qualityfactor

** Differentiation of u(t)?

** Freespace impedance?

** Resonant frequency of rlc ckt is ?

** bandwidth of telephoneis

** bit is a unit of

** when 2 n/w are connected in parallel

a. z-parameter add

b. h-paramete

c. y-parameter

d. abcd parameter

** beamwidth of antenna is

** Convolution of two u(t)?

** T function H(s)=1/(s+1),h(f)=?

** F(s)=1/s2, then f(t)?

** Fourier series expansion of a even periodic function contains ?

** If ip of ckt is sine , the steady state op willbe exponentially decay with time const,sin , damped sinusoidal

** Power gain of emitter follower?

** Highest voltage gain can be obtained from

** Differentiation of time domain is equal to

** Standard rect waveguide width to height ratio

** Which is micro wave oscillator

** If transmission line open ckt then vswr?

** Is Pn junction reversebiased ?

** Typical q factor of crystal oscillator

** In pnp transistor saturation current is due to

** When both junction of a transistor is forward biased then it is said to be in

** 50ohms line matched to 200 ohms load through quarter wavelength transmission , the characteristic impedance of matched line should be

** Hall effect used to measure?

** P type semiconductor properties?

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