74201. Match the following: List I List II A.C1.7 eVB.Si2.1.15 eVC.Ge3.0.75 eVD.Sn4.0.1 eVE.Pb5.0 eV
74202. Match the following: List I List II A.RC coupled amplifier1.Very low driftB.Tuned amplifier2.Flat frequency response from zero frequency onwardsC.Chopper stabilized amplifier3.Flat frequency response with upper and lower cut off frequencyD.DC amplifier4.Peak in gain frequency response
74203. Match the following: Microwave Measuring Instruments Measurements EffectedA.Bolometer1.Reflection coefficientsB.VSWR meter2.Half power beam widthsC.Cavity wave meter3.Microwave powerD.Pattern recorder4.Microwave frequency
74204. Match the following: List I (Circuit) List II (Characteristics) A.Darlington pair1.uses pnp and npn transistors used as power amplifierB.CB amplifier2.Voltage gain nearly 1 and high input impedanceC.Cascade amplifier3.low input impedance used for high frequency isolation
74205. Match the following: List I (FET Parameters) List II (Typical Values) A.gm for JFET1.25 kWB.rd for JFET2.0.01 siemenC.rd for MOSFET3.0.5 mWD.gg for JFET4.10-8 siemen
74206. Match the following: List I List II A.Word wrap1.interleaved execution of two or more programs by the same computerB.Client2.automatically moves a word to the next line if it does not fit in the current lineC.Multitasking3.an application receiving dataD.Landscape4.orientation of worksheet
74207. The conductivity of intrinsic semiconductor is given by
74208. The core of a coil has a length of 10 cm. The self inductance is 8 mH. If the core length is doubled, all other quantities remaining the same, the self inductance will be
74209. The minority carrier life time and diffusion constant in a semiconducting material are 100 μs and 100 cm2/s respectively. The diffusion length of carriers is
74210. Assertion (A): Electronic and Ionic polarization in a polyatomic gas are independent of temperature.Reason (R): The orientation polarization is independent of temperature.
74211. Two materials having temperature coefficients of 0.004 and 0.0004 respectively are joined in series. The overall temperature coefficient is likely to be
74212. The number of valence electrons in pentavalent impurity is
74213. If the diameter of a wire is doubled, its current carrying capacity becomes
74214. The law J = σE, where J is current density, σ is electrical conductivity and E is field strength is
74215. Assertion (A): Silicon is less sensitive to changes in temperature than germanium.Reason (R): Cut in voltage in silicon is less than that in germanium.
74216. Material which lack permanent magnetic dipoles are known as
74217. A parallel plate capacitor has its length, width and separation doubled. It fringing effects are neglected, to keep the capacitance same, the dielectric constant must be
74218. Who was the first lady Magistrate of India?
74219. Assertion (A): In imperfect capacitors, the current does not lead the applied ac voltage by 90°.Reason (R): When subjected to ac fields, the dielectric constant can be expressed as ∈'r - j∈"r.
74220. World Aids Day is on:
74221. In atomic physics, a state with l = 0 is called p state.
74222. Founder of Sadhujana Paripalana Sangam:
74223. If a sample of germanium and a sample of silicon have the same impurity density and are kept at room temperature
74224. Rajaji National Park is situated at:
74225. When an electric field E is applied to solid and liquid insulating materials, the internal field Ei acting at the location of atom is such that
74226. Kerala Sangeetha Nadaka Akkadami is situated at:
74227. Which element exhibits the property of inertia?
74228. The Smallest Taluk in Kerala:
74229. For a permanent magnetic material
74230. Vaikam Sathyagraha was started at the time of:
74231. In a coaxial cable, braided copper is used for
74232. Who was known as “Kerala Valmeeki”?
74233. The hysteresis phenomenon in ferromagnetic materials exists at all temperatures.
74234. ”Ethu Bhoomiyanu”was the famous Drama written by:
74235. Assertion (A): Magnetic susceptibility of diamagnetic materials is much less than that of paramagnetic materials.Reason (R): For diamagnetic as well as paramagnetic materials, μr is nearly equal to 1.
74236. The attraction between the nucleus and valence electron of copper atom is
74237. If a line makes angles A,B,C with the axes,then sin2 A+sin2B+sin2C=:
74238. If the temperature of an extrinsic semiconductor is increased so that the intrinsic carrier concentration is doubled, then
74239. If x2+y2=3xy+5,then dy/dx=
74240. There is no hysteresis phenomenon is any dielectric material.
74241. The equation of the tangent to the curve x2+3y=3 which is parallel to the y-4x+5=0 is:
74242. The units of μ0 and μr are
74243. function (log x)2dx/x=:
74244. In metals the valence electron wave functions are strongly perturbed by the presence of neighbouring atoms.
74245. The area included between the curve ay2=x3,the X-axis n the ordinate x=a is:
74246. For a paramagnetic material, susceptiblity increases with increasing temperature.
74247. Solution of the differential equation dy/dx=x+y+xy+1 is:
74248. Hydrogen is used in
74249. If A and B are any two nonsingular matrices of the same order,then(AB)-1=
74250. Assertion (A): Ferroelectric materials have spontaneous polarization.Reason (R): Above curie temperature, ∈ = for ferro-electric materials.
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