152451. If A and B are boolean variables, the boolean expression A + AB is:
152452. Which one among Aluminum, Constantantan Mercury, Carbon have highest resistivity :
152453. For a two terminal device, resistance decreases when the temperature increases, the device is:
152454. In a hydro electric generation system, pressure variations due to rapid changes in velocity of water is mitigated using
152455. In a complex network containing active voltage sources with zero internal resistances and linear bilateral elements the open circuit voltage across 2 terminals is 25V and the resistance of the network viewed from the open circuited terminal is 6.25 Ω If an eqivalent circuit comprising of only a current source and impedance is made, the current source rating is :
152456. A three phase balanced delta connected load of 5 + j6 Ohm in each phase is connected to a line voltage of 400V is drawing a current from the supply. If another delta connected load of same nature and magnitude is connected in parallel, the line current drawn from the supply becomes:
152457. In an synchronous generator, selective elimination of odd harmonics can be done by :
152458. The surface integral of the normal component of Electric Field Intensity over a closed surface is equal to 1/E0times the total charge inside it. This is the statement of:
152459. Smooth cylindrical type rotors with less diameter and large axial length are used for Synchronous generators driven by :
152460. If the number of poles in a syncronous machine is 6, a slot angle of 10° mechanical, when expressed in electrical degrees is :
152461. If the number of turns of an inductive coil is doubled and core length is quadrupled, other parameters being the same, the inductance of the coil became :
152462. If the ratio of average charge voltage to average discharge voltage in a lead acid cell is 4/3, the ratio of its Watt Hour efficiency to Ampere hour efficiency is :
152463. A three phase induction motor runs at 2% slip and its .rotor frequency is 1Hz. Stator frequency in Hertz is :
152464. To have a smooth, quite running of an induction motor by reducing humming and to prevent cogging, the technique used is called :
152465. If the flux per pole of a shunt-wound DC generator is halved and the number of poles is doubled, the generated e.m.f. at constant speed :
152466. In dc generators, the winding used in a machine delivering low voltage, high current load is :
152467. Which among the following can support a synchronous motor in Starting :
152468. Two reaction theory is used in the analysis of Synchronous machine to take into account the :
152469. In a transformer delivering a variable load, Zero voltage regulation can occur at:
152470. In an alternating voltage supply of constant voltage feeding a Transformer, the presence of higher order harmonics can cause significant changes in :
152471. The Maximum percentage efficiency of a 1KVA transformer with iron losses equal to 125 W at upf load is :
152472. De Morgan's Law says :
152473. The excess-3 code corresponding to decimal number 156 is :
152474. A Mod-31 synchronous Counter ideally has-------------------number of flipflops.
152475. Which among the following is/’arc TRUE regarding the OP AMP circuit?
152476. When comparing Active and Passive filters, which of the following statements are Wrong?
152477. For unipolar operation, an 8 bit Digital to Analog Converter has a resolution of:
152478. In a circuit containing a transistor, both of its junctions are forward biased. It operatesin----------- region.
152479. If only 5 bites are used for addressing the memory of a computer system the memory size is:
152480. The ripple factor and efficiency of a half wave rectifier are respectively
152481. For a short transmission with series impedance Z,all the capacitances being negligibly small the ABCD constants of the line are :
152482. The Opposition to the flow of current in a conductor can increase in ‘alternating circuits compared to dc circuits due to:
152483. The load flow analysis algorithm having the least rate of convergence is
152484. Under ground cables are less preferable in high voltage transmission because of:
152485. The metals normally used in a IIRC fuse are :
152486. The transient stability of a power system can be improved by :
152487. For economic load dispatch :
152488. In a power system, the cost of generated electrical enegry will be low if:
152489. An over exited synchronous machine has a lagging powerfactor. The machine is :
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