# BSNL JE 27th evening shift

lets discuss the answer key for 27th evening shift here and claim for wrong one's....lets all join here...!!!

acc. to me following questions have been wrongly answered:

Refractive index of a medium

boltzmann const

AM where %age of modulation is to be calculated

Thevenin's theorem reduces a two terminal network to

Band width is the range of frequencies for which system gain is

ADD IMMEDIATE to ACCUMULATOR WITH CARRY

bits are needed to address 64K memory location

fastest memory cell

pls everybody share you views and more wrong questions...!!!

remember Q9... phrase option tha... jargon nahi.... am i right???? please reply bhai log

which one is not peripheral device answer should be cpu not printer

some more doubtful questions are as follow:

equation of circle where diameters are given

to find real and imaginary part,; ans must be a=32/17, b=-2/17

proving that a quadrilateral is a parallelogram by using slopes, you must find, ;ans must be both the lengths and slopes of all four sides

Boltzman's constant and planck's constant differ in the dimensions

Refractive index of a medium is; ans must be Speed of light in vacuum to speed of light in air

direction of induced e.m.f. in a conductor (or coil) can be determined by

finding voltage across RL; ans must be 9V, 12V

P.S. everyone pls give your views

Q24. The equation of a circle..ans: X2+Y2-25=0

Q25.real and imaginary parts..ans:32/17,-2/17

Q40.the element with max no of its electrons in valence shell..ans:9

Q54.Refractive index of medium is..ans:speed of light in vacuum to air

Q95.AND operation of 79 and -56...ans:50H

Q96.conversion of +1000 decimal no into signed binary word..ans:0000 0011 1110 1000

Q103.the decimal equivalent of 11011101...ans:221

Q132 in the amplitude modulated wave Emax is 10v, Emin is 5v.....ans:33.3%

Q135 if the modulation index of an AM wave is 0.6....ans:0.8

Q149 thevenins theorem reduces two terminal network to a....ans:voltage generator in series with an aimpedance.

Q172 the operational amplifier used in analog computer...ans:very high gain.

Q175 bandwidth is the range of frequencies for which system gain is..ans:more than -3db

Q183 which device converts, a decimal input no to binary...ans:encoder

Q196 how many bits are needed to address 64k memory locations...ans:16

Q198 which of the following are not peripheral devices...ans:CUP

All aanswers which I wrote with questions are correct one.but In exam      answers given for them are wrong.

Some answers given in key are wrong.I hv given below with correct answer: Q24. The equation of a circle..ans: X2+Y2-25=0Q25.real and imaginary parts..ans:32/17,-2/17Q40.the element with max no of its electrons in valence shell..ans:9Q54.Refractive index of medium is..ans:speed of light in vacuum to airQ95.AND operation of 79 and -56...ans:50HQ96.conversion of +1000 decimal no into signed binary word..ans:0000 0011 1110 1000Q103.the decimal equivalent of 11011101...ans:221Q132 in the amplitude modulated wave Emax is 10v, Emin is 5v.....ans:33.3%Q135 if the modulation index of an AM wave is 0.6....ans:0.8Q149 thevenins theorem reduces two terminal network to a....ans:voltage generator in series with an aimpedance.Q172 the operational amplifier used in analog computer...ans:very high gain.Q175 bandwidth is the range of frequencies for which system gain is..ans:more than -3dbQ183 which device converts, a decimal input no to binary...ans:encoderQ196 how many bits are needed to address 64k memory locations...ans:16Q198 which of the following are not peripheral devices...ans:CUP

Q187 when the signal on rest-in goes low..... answer should be ans: All of these.

Some answers given in key are wrong.I hv given below with correct answer: Q24. The equation of a circle..ans: X2+Y2-25=0Q25.real and imaginary parts..ans:32/17,-2/17Q40.the element with max no of its electrons in valence shell..ans:9Q54.Refractive index of medium is..ans:speed of light in vacuum to airQ95.AND operation of 79 and -56...ans:50HQ96.conversion of +1000 decimal no into signed binary word..ans:0000 0011 1110 1000Q103.the decimal equivalent of 11011101...ans:221Q132 in the amplitude modulated wave Emax is 10v, Emin is 5v.....ans:33.3%Q135 if the modulation index of an AM wave is 0.6....ans:0.8Q149 thevenins theorem reduces two terminal network to a....ans:voltage generator in series with an aimpedance.Q172 the operational amplifier used in analog computer...ans:very high gain.Q175 bandwidth is the range of frequencies for which system gain is..ans:more than -3dbQ183 which device converts, a decimal input no to binary...ans:encoderQ196 how many bits are needed to address 64k memory locations...ans:16Q198 which of the following are not peripheral devices...ans:CUP

Q187 when the signal on rest-in goes low..... answer should be ans: All of these.

Some answers given in key are wrong.I hv given below with correct answer:

Q24. The equation of a circle..ans: X2+Y2-25=0

Q25.real and imaginary parts..ans:32/17,-2/17

Q40.the element with max no of its electrons in valence shell..ans:9

Q54.Refractive index of medium is..ans:speed of light in vacuum to air

Q95.AND operation of 79 and -56...ans:50H

Q96.conversion of +1000 decimal no into signed binary word..ans:0000 0011 1110 1000

Q103.the decimal equivalent of 11011101...ans:221

Q132 in the amplitude modulated wave Emax is 10v, Emin is 5v.....ans:33.3%

Q135 if the modulation index of an AM wave is 0.6....ans:0.8

Q149 thevenins theorem reduces two terminal network to a....ans:voltage generator in series with an aimpedance.

Q172 the operational amplifier used in analog computer...ans:very high gain.

Q175 bandwidth is the range of frequencies for which system gain is..ans:more than -3db

Q183 which device converts, a decimal input no to binary...ans:encoder

Q196 how many bits are needed to address 64k memory locations...ans:16

Q198 which of the following are not peripheral devices...ans:CUP

Q187 when the signal on rest-in goes low..... answer should be ans: All of these.

Have anyone applied to chennai circle??.... Instead of applying for T.N by mistake I have applied for chennai circle...will there be any problem???

Moreover vacancy is also comparitively less in chennai circle .. :( what to do now??

Some answers given in key are wrong.I hv given below with correct answer:

Q24. The equation of a circle..ans: X2+Y2-25=0

Q25.real and imaginary parts..ans:32/17,-2/17

Q40.the element with max no of its electrons in valence shell..ans:9

Q54.Refractive index of medium is..ans:speed of light in vacuum to air

Q95.AND operation of 79 and -56...ans:50H

Q96.conversion of +1000 decimal no into signed binary word..ans:0000 0011 1110 1000

Q103.the decimal equivalent of 11011101...ans:221

Q132 in the amplitude modulated wave Emax is 10v, Emin is 5v.....ans:33.3%

Q135 if the modulation index of an AM wave is 0.6....ans:0.8

Q149 thevenins theorem reduces two terminal network to a....ans:voltage generator in series with an aimpedance.

Q172 the operational amplifier used in analog computer...ans:very high gain.

Q175 bandwidth is the range of frequencies for which system gain is..ans:more than -3db

Q183 which device converts, a decimal input no to binary...ans:encoder

Q196 how many bits are needed to address 64k memory locations...ans:16

Q198 which of the following are not peripheral devices...ans:CUP

Q187 when the signal on rest-in goes low..... answer should be ans: All of these.

Q188 in 8085,i instruction add immediate to accumulator with carry...ans:ACI

Q188 in 8085,i instruction add immediate to accumulator with carry...ans:ACI

please share the proofs for wrong questions here, so that everyone of us can claim for wrong answers.

For control system 173 and for microprocessor types of flags and direction of induced emf i have given proofs in Bsnl tta

27 evening

Q64 direction of induced emf...ans: Flemings right hand rule

Q81 boltzmann const represente the variation...ans:temperature. K=ev/kelvin

Q173 usually the controll system should have... Ans:underdamping action.source: safaribooksonline.com,researchgate.net

Q197 which is fastest memory cell..ans:semiconductor memory. Source:books.google.co.in,ibdiabix.com, ucentp.in

71 also wrong Correct ans is only 100W lamp will fuse

27 evening

Pls check what about these ques……

Q71 Ans: only 100 watt bulb will fuse

Q72 Ans: electrolyte

Q96. Ans: 0000001111101000

Q132. Ans: 33.33%

Q133 Ans: 40db

Q185 Ans: 4bits to 32bits

Q196 Ans: 16 bit