59301. In an insulated gate FET, the polarity of inversion layer is the same as that of
59302. Hall effect can be used to find the type of semiconductor.
59303. The conductivity of germanium increases by about 6 percent per degree increase in temperature.
59304. The range of visible light is
59305. Higher value of ripple factor indicates
59306. When a semi-conductor is doped, its electrical conductivity
59307. The conduction band is
59308. If an additional two diodes were used to connect the 1 kW load across a bridge rectifier circuits, utilizing the full secondary of the transformer, how much d.c. power could be delivered using a transformer with the rating of 105 VA?
59309. In an n channel JFET, VGS = VGS(off). Then
59310. In a bipolar transistor which current is smallest
59311. With increasing temperature, the electrical conductivity of metals
59312. The reverse saturation current in a semiconductor diode consists of
59313. The current gain of a transistor is the ratio of
59314. If a sample of Ge and a sample of Si have the same impurity density are kept at room temperature
59315. Varactor diode is forward biased when it is used.
59316. A good ohmic contact on a P-type semiconductor chip is formed by introducing
59317. The impurity added to extrinsic semiconductor is of the order of
59318. For a BJT, avalanche multiplication factor depends on
59319. The impurity commonly used for realizing the base region of a n-p-n transistor is
59320. Assertion (A): In CE connection of n-p-n transistor. VCE is positive. Reason (R): In BJT, the base collector junction is reverse biased.
59321. Assertion (A): Tunnel diode is used in many pulse and digital circuits. Reason (R): The v-i curve of a tunnel diode resembles letter 'N'.
59322. In ferromagnetic materials
59323. Which one of the following circuits is most suitable as an oscillator at a frequency of 100Hz?
59324. The conductivity of an intrinsic semiconductor is
59325. Which of the following materials has the highest electrical conductivity?
59326. For masonry work with solid bricks consistency of mortar should be
59327. Hay bridge is suitable for measuring inductance of which one of the following inductors?
59328. When a substance is repelled by a magnetic field it is known as
59329. If μn is mobility of free electron and μp is mobility of holes then for silicon at 300 K
59330. In a specimen of n type semiconductor, the initial concentration of holes and electrons is pno and nno. When the specimen is subjected to radiation, the hole and electron concentration increase to pn and nn. Then
59331. Which of the following diode is designed to operate in the breakdown region?
59332. Fill in the suitable word in the blanks is the following questions. The electron in the outermost orbit is called __________ electron.
59333. A silicon diode is forward biased and total applied voltage is 5 V. The voltage across p-n junction is
59334. In a triode
59335. The output characteristics of a bipolar transistor has three distinct regions. They are known as
59336. Assertion (A): In a BJT, a dc is about 0.98. Reason (R): In a BJT, recombination in base region is high.
59337. Wienbridge oscillator uses
59338. Which of the following material is preferred for transformer cores operating in micro wave frequency range?
59339. The ac resistance of a forward biased p-n junction diode operating at a bias voltage V and carrying current 'I' is
59340. Photoelectric emitters in photo tubes are generally made of
59341. Assertion (A): Power transistors are more commonly of silicon npn type. Reason (R): The fabrication of silicon npn transistors is easy.
59342. In N-type semiconductor
59343. The addition of n type impurity to intrinsic material creates allowable energy levels.
59344. Which of the following elements act as donor impurities? GoldPhosphorusBoronAntimonyArsenicIndium Select the correct answer using the codes given below:
59345. The depletion layer in a reverse biased p-n junction is due to the presence of
59346. Which materials find application in MASER?
59347. An electrically neutral semiconductor has
59348. Magnetic recording tape is most commonly made from
59349. The circuit shown in the figure is best described as a
59350. Gold is often diffused into silicon P-N junction devices to