Multi Option Question Page 3214

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You Are On Multi Choice Question Bank SET 3214

160701. When the water table is close to the ground surface, the bearing capacity of a soil is reduced to:

160702. A staff reading taken on a bench mark or a paint of known elevation is called :

160703. The power of a telescope to form distinguishable images of objects separated by small angular distance is called its :

160704. What type of cooling system is generally employed in two stroke engines used in two wheelers?

160705. The compression ratio of a diesel engine is in the range from :

160706. The function of a flywheel in an automobile is to :

160707. A Kaplan turbine is preferred when the available head is :

160708. In a nuclear reactor, heavy water can be ideally used as :

160709. Form factor is equal to :

160710. Value of Power factor lies in between :

160711. Two resisters R1 and R2 give combined resistance of 6 ohm when in series and 0.83 ohm when in parallel. The ’resistances are :

160712. In an R, L, C series circuit impedance Z is equal to :

160713. A wire having resistance R1 is stretched to double its length. The new resistance R2 is :

160714. When voltage applied to a diode is more than PIV, it is likely to result in :

160715. Which of these cells in GSM / CDMA networks are used for densely populated areas?

160716. The one bit registers provided in microcontrollers to store the results of certain programinstructions are called a--------------.

160717. What is the typical drop out voltage across 7805 fixed positive voltage regulator?

160718. A cell of an UPS battery has an Ah efficiency of 80%. It has an average terminal voltage on discharge and charge of 1.2 V and 1.6 V respectively. The Watt-hour efficiency of the cell is --------------------%.

160719. Find the Thevenin’s voltage across the points A and B in the following circuit:

160720. Which of the following currents can induce the maximum induced voltage in a coil?

160721. A bandpass filter has a bandwidth of 4 kHz with a central frequency of 50 kHz. If the gain at 48 kHz is 10 dB, what is the maximum gain?

160722. In a 3 phase power measurement using two wattmeter method, both wattmeters give the same reading. What is the power factor of the circuit?

160723. A spherical capacitor has an inner conducting sphere of 0.1 m and outer conducting sphere of radius 0.2 m. The space in between is filled with a dielectric of permeability Σ What is its capacitance?

160724. Divergence of curl of any vector is :

160725. Two inductances of 1H each are coupled together. The maximum value of mutual inductance between them is:

160726. The inductance of a long solenoid is measured as 1 mH. What will be its inductance, if the number of turns is doubled?

160727. The energy stored in the magnetic field of a solenoid carrying a current of 10 A is 0.5 J. What will be the stored energy if the number of turns is doubled and the current is halved?

160728. A capacitance is formed using 3 different dielectrics, as shown in the figure. If the capacitance due to dielectric A alone is 2juF, what is the total capacitance?

160729. The minimum regulation of a transformer occurs at a power factor of 0.707. The power factor at maximum regulation will be :

160730. The core loss of a transformer under OC test was measured as 40 W’ using an LPF wattmeter. If the same power is measured using an HPF wattmeter, what will it read :

160731. A 220 V DC machine which runs at rated speed as a generator supplies 10 A current. If the same machine is allowed to run as a motor and if it takes 10 A current, at what percentage of rated speed will it run?

160732. In a Brush Less DC (BLDC) motor, the construction of motor is similar to :

160733. The load angle of a'perfectly compensated DC motor.is :

160734. In a v/f controlled induction motor which runs at 50 Hz and rated voltage, the speed was found to be 1440 rpm. If the machine runs at 850 rpm at 30 Hz, what is the slip?

160735. The maximum efficiency of an induction motor occurs at 4 kw. What will be the rating of the machine?

160736. A field excitation of 20 A in a certain alternator results in an armature current of 400 A in short circuit and a terminal voltage of 2000 V in open circuit. The magnitude of internal voltage drop within the machine at a load current of 200 A is:

160737. A synchronous motor is connected to an infinite bus at 1.0 pu voltage and draws 1.0 pu current at unity power factor. The synchronous reactance is 1.0 pu and resistance is negligible. What is the load angle?

160738. If the field excitation of a salient pole synchronous generator is removed, what will happen to the machine?

160739. The leakage resistance of a 100 km long cable is 1mΩ. For a length of 50 km, the resistance will be :

160740. For an induction motor, it was found that the no load and full load currents are almost the same. The reason is :

160741. Two power plants Pl and P2 are connected bya lossyline with loss coefficients B11=0.001B22 = 0.0005, B12 =-0.0001. What is thepowerloss for generations P,P2=100MW?

160742. In the case of a single L-N fault of a 3 phase isolated neutral power system, what will be the voltage on healthy phases? The line-to-line voltage is V kV :

160743. A lossless transmission line having surge impedance loadings of 2000 MW is provided with a distributed series capacitive compensation of 200 MVAR. The STL of the compensated line will be:

160744. A voltage of 5 + Vs sin (314t-^30°)+5>^ sin 628f was measured with a capacitive coupled rms meter. What will be the reading?

160745. A DC ammeter has a resistance of 0.1Ω and its currents range is 0-100 A. If the range is to be extended to 0-500 A, then the shunt resistance should be :

160746. A single phase energy meter is operating on 200 V, 50 Hz supply with a load of 10 A for two hours at 0.8 p.f. The.meter takes 1800 revolutions in that period. The meter constant is :

160747. What will be the reading on the wattmeter connected in the following figure? Assume balanced supply:

160748. Which of the following device will be chosen to measure the flow of fluid in open channel?

160749. A system is having a transfer function of--. What will be its impulse response?s + a

160750. The transfer function V2(s)/V1(s)of the circuit shown below is

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160701. When the water table is close to the ground surface, the bearing capacity of a soil is reduced to: (adsbygoogle = window.adsbygoogle || []).push({});