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# Electrical Engineering (EE)

Brijendra Pal asked   •  2 minutes ago

## If three resistance connected in parallel 60,30,20ohm respectively in a closed circuit. What is total equivalent resistance? Solve by both methods- (R1*R2*R3*/R1+ R2 +R3) and (1/R1+ 1/R2+ 1/R3) check and explain why both answ... more

Vishnu A asked   •  3 minutes ago

## Consider the following statements:1. The effect of feedback is to reduce the system error.2. Feedback increases the gain of the system in one frequency range but decreases in another.3. Feedback can cause a system that is originally stable to become unstable.Which of these statements are correct ?a)1, 2 and 3b)1 and 2c)2 and 3d)1 and 3Correct answer is option 'D'. Can you explain this answer?

Akshata Ngl asked   •  25 minutes ago

## X(t)=u(t 2)-u(t-2) h(t)=u(t 2)-u(t-2) Find x(t)*h(t) with graphical method?

Vikash Kumar Shah asked   •  32 minutes ago

## The resistance ofearth should bea)infiniteb)highc)lowd)the minimum possibleCorrect answer is option 'D'. Can you explain this answer?

Akshay Mishra asked   •  48 minutes ago

## Oscillators use following feedback. a)negativeb)Positivec)Both negative and positived)none of the aboveCorrect answer is option 'B'. Can you explain this answer?

Bhuvaneshwari Kanagaraj asked   •  1 hour ago

## The main characteristics of a Darlington amplifier area)high input impedance, low output impedance and high current gain.b)low input impedance, low output impedance and low current gain.c)high input impedance, high output impedance and high current gain.d)low input impedance, low output impedance and high current gain.Correct answer is option 'A'. Can you explain this answer?

Sai Kiran asked   •  1 hour ago

Suraj Tanaji Mali asked   •  1 hour ago

## An amplifier is measured to have an internal resistance of 10 kilo ohm voltage gain of 100v/v and output resistance of 100 ohm also when a load resistance of 1 kilo ohm is connected between the output resistance if found to d... more

Balaji Suryawanshi asked   •  1 hour ago

## If two induction motors A and B are identical except that the airgap of motor 'A' is 50% greater than that of motor 'B' thena)the no-load power factor of A will be better than that of B.b)the no-load power factor of A will be poorer than that of B.c)the core losses of A will be more than those of B.d)the operating flux of A will be smaller than that of B.Correct answer is option 'B'. Can you explain this answer?

Anurag Kumar asked   •  1 hour ago

## A point B is 55mm above the HP and 65 mm behind the VP. In which quadrant does the point lie?

Pro Pro asked   •  1 hour ago

## Assertion (A): The realization of one port LC networks can be done in two. configurations (commonly known as Cauer-I and Cauer-II forms) using the continued fraction expansion of the driving point impedance.Reason (R): The basic form of the Cauer realization being a ladder type network.a)Both A and R are true and R is the correct explanation of A.b)Both A and R are true but R is not the correct explanation of A.c)A is true but R is false.d)A is false but R is true.Correct answer is option 'A'. Can you explain this answer?

Umesh Pirankar asked   •  2 hours ago

## Part of the transformer which is most subject to damage from overheating isa)iron coreb)copper windingc)winding insulationd)frame or caseCorrect answer is option 'C'. Can you explain this answer?

Arul Guru asked   •  2 hours ago

## Fill in the blanks :At times, we are all ______ to be mistaken.a)aptb)likelyc)consideredd)ableCorrect answer is option 'B'. Can you explain this answer?

Amit Parashar asked   •  3 hours ago

## A system is described by the difference equation,  The impulse response of the system is a)b)c)d)Correct answer is option 'D'. Can you explain this answer?

Indrajit Mal asked   •  3 hours ago

## The welding transformer used in resistance welding willa)step up currentb)step down currentc)step up voltaged)step up powerCorrect answer is option 'A'. Can you explain this answer?

Rambali Mashiha asked   •  3 hours ago

## Arcing voltage will be the least in case ofa)carbon.b)copper.c)silver.d)tungstenCorrect answer is option 'C'. Can you explain this answer?

Suraj Kumar asked   •  3 hours ago

## Which one of the following causes phase shift through causes phase shift through an op-amp?a)Internal RC circuitsb)Gain roll off the internal transistorc)External RC circuits.d)Negative feedbackCorrect answer is option 'C'. Can you explain this answer?

Raj Gaming asked   •  4 hours ago

## In the resistor network shown in figure, all resistor values are 1 Ω. A current of 1 A passesfrom terminal a to terminal b, as shown in the figure. Calculate the voltage betweenterminals a and b?

Nitin Maurya asked   •  4 hours ago

## For the signal flow diagram shown in the given figure, the transmittance between x2 and x1 is... more

Amit Parashar asked   •  4 hours ago

## In the buck-boost converter, what is the maximum value of the switch utilization - factor?a)1.00b)0.50c)0.75d)0.25Correct answer is option 'C'. Can you explain this answer?

Nitin Negi asked   •  4 hours ago

## Speed torque characteristic of a repulsion induction motor is similar to that of a D.C.a)shunt motorb)series motorc)compound motord)separately excited motorCorrect answer is option 'C'. Can you explain this answer?

Sunil Manjani asked   •  4 hours ago

## One of the advantages of base modulation over collector modulation of a transistor class C amplifier isa)lower modulating power requiredb)higher power output per transistorc)better efficiencyd)better transmissionCorrect answer is option 'A'. Can you explain this answer?

Sunil Manjani asked   •  5 hours ago

## In a PLLa)Capture range = Lock range # Free running frequencyb)Capture range = Lock range = Free running frequencyc)Capture range > Lock ranged)Capture range < Lock rangeCorrect answer is option 'D'. Can you explain this answer?

Rahul Bopche asked   •  5 hours ago

## Dominating harmonics in IM isa)(6n ±1)b)(4n ±1)c)(2n ±1)d)(8n ±1)Correct answer is option 'A'. Can you explain this answer?

Rohit Kumar asked   •  5 hours ago

## The positive sequence current for a L-L fault of a 2 kV system is 1400 A, and corresponding current for a L-L-G fault is 2220 A. The zero sequence impedance of the system isa)62.75Wb)4.5275Wc)5.275Wd)0.5275WCorrect answer is option 'D'. Can you explain this answer?

Sunil Manjani asked   •  6 hours ago

## One of the following consists of no resonant antennas:a)The rhombic antennab)The folded dipolec)The end-fire arrayd)The broadside arrayCorrect answer is option 'A'. Can you explain this answer?

Mohsin Khan asked   •  6 hours ago

## While using air-blast circuit beaker, current chopping is a phenomenon often observed whena)A long overhead line is switched offb)A bank of capacitors is switched offc)A transformer on no-load is switched offd)A heavy load is switched offCorrect answer is option 'C'. Can you explain this answer?

Nagaveni Kiranagi asked   •  6 hours ago

## For the circuit of 0.25 ohm and 0.2 ohm. Resistor and volage of 12 and 12 find the current supplied by each battery and power disscipated in1ohm resistor Related: Node-voltage analysis of resistive circuit in the context of dc voltages and currents

Dedefo Namo asked   •  7 hours ago

## The following information is available for the generalized feedback network. open loop Av is-100.input voltage to the system (Vin')=1mV.determine the closed voltage amplifier?

Pankaj Rasane asked   •  7 hours ago

## A wire 2.5m long is bent into a square. A current of 100 A flowing through the wire will producea magnetising force at the centre of the square,equal toa)72 AT/mb)144 AT/mc)196 AT/md)222 AT/mCorrect answer is option 'B'. Can you explain this answer?

Sushil Bohra asked   •  7 hours ago

## How does the MOSFET differ from the JFET?a)JFET has a p-n junctionb)They are both the samec)JFET is small in sized)MOSFET has a base terminalCorrect answer is option 'A'. Can you explain this answer?

Vikash Kumar asked   •  8 hours ago

## A 2V/1V two- winding transformer is connected as an autotransformer. Its voltage regulation as an autotransformer compared to the two-winding transformer is :a)the sameb)1.5 timesc)2 timesd)3 timesCorrect answer is option 'D'. Can you explain this answer?

Anjali Dubey asked   •  8 hours ago

## In a power house, illumination should be approximately ............a)20 – 40 lumen/m2b)80 – 90 lumen/m2c)100-150 lumen/m2d)200 – 250 lumen/m2Correct answer is option 'C'. Can you explain this answer?

Akshay Mishra asked   •  8 hours ago

## The voltage coil of a single phase house energy meter a)is highly resistive b)is highly inductive c)is highly capacitive  d)has a phase angle equal to load power factor angle. Correct answer is option 'B'. Can you explain this answer?

Shaik Shahina asked   •  8 hours ago

## consider the following statements :1. The effect of feedback is to reduce the system error2. Feedback increases the gain of the system in one frequency range but decreases in another.3. Feedback can cause a system that is originally stable to become unstableWhich of these statements are correct ? a)1, 2 and 3b)1 and 2c)2 and 3d)1 and 3Correct answer is option 'D'. Can you explain this answer?

Dayasagar Nayak asked   •  9 hours ago

## A particular current is made up of two components a 10A DC and sinusoidal current of peak value of 14.14A .The average value of resultant current is?

Mohsin Khan asked   •  9 hours ago

## To prevent maloperation of differentially relay while energizing a transformer, the relay restraining coil is biased witha)Second harmonic currentb)Third harmonic currentc)Fifth harmonic currentd)Seventh harmonic currentCorrect answer is option 'A'. Can you explain this answer?

AMAN KATWAL asked   •  9 hours ago

## In the circuit of the fig P1.1.7, the value of the voltage source E isa)-16 Vb)4 Vc)-6 Vd)16 VCorrect answer is option 'A'. Can you explain this answer?

Dileep Shrivastava asked   •  9 hours ago

## Interpoles are usually wound witha)very fine gauge copper wireb)heavy gauge copper wirec)insulation materiald)interpoles do not need windingCorrect answer is option 'B'. Can you explain this answer?

Shunmuga Lakshmi asked   •  9 hours ago

## The transfer function G(s) of a PID controller isa)b)K[1+Tis + Tds]c)d)K{1+Tis +TdS}Correct answer is option 'A'. Can you explain this answer?

Satish Pawar asked   •  10 hours ago

## The power factor of an open ended cable can be improved bya)increasing the capacitanceb)decreasing the capacitancec)increasing the conductor resistanced)increasing the insulation resistanceCorrect answer is option 'D'. Can you explain this answer?

Rajeshraj Ball asked   •  10 hours ago

## When transistors are used in digital circuits they usually operate in thea)active regionb)breakdown regionc)saturation and cut off regionsd)linear regionCorrect answer is option 'C'. Can you explain this answer?

Indrajit Mal asked   •  10 hours ago

## If the separation between the three phase of a transmission line is increased thena)the inductance will increase and capacitance will remain unchangedb)both inductance and capacitance will increasec)the inductance will increase and the capacitance will decreased)the inductance will decrease and the capacitance will increaseCorrect answer is option 'C'. Can you explain this answer?

Rahul Meena asked   •  10 hours ago

## Voltage depend on reactive power proof?

Ashish Verma asked   •  10 hours ago

## Statement for Linked Answer Questions: 62 & 63In the following network, the voltage magnitudes at all buses are equal to 1 pu, the voltage phase angles are very small, and the line resistances are negligible. All the line reactances are equal to j1The voltage phase angles in rad at buses 2 and 3 area)b)c)d)Correct answer is option 'C'. Can you explain this answer?

Sunil Manjani asked   •  10 hours ago

## When electromagnetic waves are reflected at an angle from a wall, their wave-length along the wall isa)the same as in free spaceb)the same as the wavelength perpendicular to the wallc)shortened because of the Doppler effectd)greater than in the actual direction of propagationCorrect answer is option 'D'. Can you explain this answer?

Sunil Manjani asked   •  11 hours ago

## A Wien-bridge is used to measure the frequency of the input signal. However, the input signal has 10% third harmonic distortion. Specifically the signal is 2 sin 400 πt + 0.2 sin 1200 πt (with t insec). With this input the balance willa)Lead to a null indication and setting will correspond to a frequency of 200 Hzb)Lead to a null indication and setting will correspond to 260 Hzc)Lead to a null indication and setting will correspond to 400 Hzd)Not lead to null indicationCorrect answer is option 'D'. Can you explain this answer?

Indrajit Mal asked   •  11 hours ago

## Wattless current is possible, only ina)resistive circuitb)non-resistive circuitc)LR-circuitd)LCR circuitCorrect answer is option 'B'. Can you explain this answer?

Anjali Sb asked   •  11 hours ago

## Acceptor impurity atom in germanium results ina)Increased forbidden energy gapb)Reduced forbidden energy gapc)New narrow energy band slightly above the valence leveld)New discrete energy level slightly above the valence levelCorrect answer is option 'D'. Can you explain this answer?

Sai Kiran asked   •  11 hours ago

## Open circuit test of a transformer givesa)hysteresis lossb)eddy current lossc)hysteresis and eddy current loss bothd)copper lossCorrect answer is option 'C'. Can you explain this answer?

Sunil Babu asked   •  11 hours ago

## The value of the voltage gain (Av) for the common source with source resistance (represented by A1) and common gate configuration (represented by A2) are related to each other bya) A1 > A2b) |A1| > |A2|c) A1 < A2d) A1 > A2 and |A1| > |A2|Correct answer is option 'C'. Can you explain this answer?

ANIMESH SAHU asked   •  12 hours ago

## Direction of rotation of a DC motor can be reversed by changing the direction of .?

Devdeep Verma asked   •  13 hours ago

## First microprocessor was built by?

Shital Devake asked   •  13 hours ago

## Galloping in transmission line conductors arises generally due toa)Asymmetrical layers of ice formationb)Vortex phenomenon in light windsc)Heavy weight of the line conductorsd)Adoption of horizontal conductor configurationsCorrect answer is option 'A'. Can you explain this answer?

Megha Kale asked   •  13 hours ago

## Needed a Document for power elecronics? Related: Power Electronic Devices?

Riya Kumari asked   •  13 hours ago

## The energy of the signal ,x(t) =e power -100 u(t) contained in the band mode f > then equal to 50 pi hz is?

Anwarjohn Shaik asked   •  13 hours ago

## Can you explain the answer of this question below:The voltage across a 100 μF capacitor is shown in fig. The waveform for the current in the capacitor isA:B:C:D:The answer is d.

Pediredla Divya asked   •  14 hours ago

## Standard 2nd order system to a unit step input shows the 0.36 in the first peak under shoot hence 2nd peak over shoot?

Harika Kallem asked   •  14 hours ago

## The 10's complement of (715) octal 8 is ?

Sunil Manjani asked   •  14 hours ago

## The input to a coherent detector is DSB-SC signal plus noise. The noise at the detector output isa)the in-phase componentb)the quadrature-componentc)zerod)the envelopeCorrect answer is option 'A'. Can you explain this answer?

Kyle Palmer asked   •  14 hours ago

## Find the ft required for internally compensated op amps to be used in the implementation of the closed loop amplifiers with dc gain of +100 V/V and 3db bandwidth of 100kHz?a)1 kHzb)10 kHzc)100 kHzd)1 MHzCorrect answer is option 'B'. Can you explain this answer?

Bhavana Reddy Chinthared asked   •  14 hours ago

## Needed a Test for DC machines? Related: Introduction on Induction Machines - Induction Machines, Electrical Machines

Kangari Folk asked   •  14 hours ago

## A piece of oil soaked paper has been inserted between the plates of a parallel plate capacitor.Then the potential difference between the plates willa)increaseb)decreasec)remain unalteredd)becomes zeroCorrect answer is option 'B'. Can you explain this answer?

Sunil Manjani asked   •  14 hours ago

## A directional coupler with three or more holes is sometimes used in preference to the two-hole couplera)because it is more efficientb)to increase coupling of the signalc)to reduce spurious mode generationd)to increase the bandwidth of the systemCorrect answer is option 'D'. Can you explain this answer?

Vikash Parashar asked   •  15 hours ago

## A microprocessor with a 16-bit address bus is used in a linear memory selection configuration (i.e., Address bus lines are directly used as chip selects of memory chips) with 4 memory chips. The maximum addressable memory space isa)64 Kb)16 Kc)8 Kd)4 KCorrect answer is option 'A'. Can you explain this answer?

Punam Jha asked   •  15 hours ago

## Ib = ?a)0.6 Ab)0.5 Ac)0.4 Ad)0.3 ACorrect answer is option 'B'. Can you explain this answer?

JYOTI CHARAN asked   •  15 hours ago

## Match List-I (Physical quantities) with List-ll (Dimensions) and select the correct answer using the codes given below the lists:List-IA. Electric potentialB. Magnetic fluxC. Magnetic field intensityD. Magnetic flux densityList-ll1. MT-2I-12. ML2T-3I-1 3. IL-14. ML2T-2I-1a)2, 4, 3, 1b)4, 2, 3, 1c)1, 2, 1, 3d)4, 2, 1, 3Correct answer is option 'C'. Can you explain this answer?

Bhagyasree Mekala asked   •  15 hours ago

## The r.m.s. value of a sine wave is 200 V. Its average value is –a)70.7 Ab)141.4 Ac)150 Ad)282.8 ACorrect answer is option 'C'. Can you explain this answer?

KUMARI BABY asked   •  15 hours ago

## A rigid body is rotating with an angular velocity of ω where, and v is the line velocity. If is the position vector given by  then the value of curl will be equal to a)1/2 ωb)ωc)1/3 ωd)2 ωCorrect answer is option 'D'. Can you explain this answer?

Sachin Kuranalli asked   •  15 hours ago

## The maximum efficiency at full load and unity pf of a single phase 25KVA, 50/1000V, 50Hz transformer is 98%, determine the efficiency at:i) 75% load, 0.9 pf ii) 50% load, 0.9pf. * 8 points 97.69% ii) 97.24% 98.69% ii) 97.24% ... more

Sunil Manjani asked   •  16 hours ago

## Which one of the following statement is correct? The equalizing pulses in television transmission are sent duringa)vertical blankingb)horizontal blankingc)horizontal retraced)picture forward traceCorrect answer is option 'A'. Can you explain this answer?

Tushar Vaid asked   •  16 hours ago

## Which of the following types of a.c. motors aresynchronous type ?a)universal motorb)reluctance motorc)hysteresis motord)Both (ii) and (iii)Correct answer is option 'D'. Can you explain this answer?

Sunil Manjani asked   •  16 hours ago

## As a result of reflections from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater greater than the velocity of light in space. This is called thea)velocity of propagationb)normal velocityc)group velocityd)phase velocityCorrect answer is option 'D'. Can you explain this answer?

Rakesh Sethi asked   •  16 hours ago

## In a network containing active components,the output voltage?

Mohsin Khan asked   •  16 hours ago

## The small value to drain to source voltage, JFET behaves like aa)resistorb)constant current sourcec)constant voltage sourced)negative resistanceCorrect answer is option 'A'. Can you explain this answer?

Sameer Mod asked   •  16 hours ago

## A 3-phase line is designed with an equilateral spacing of 16 m. It is decided to build the line with horizontal spacing.The conductors are transposed. The spacing between the adjacent conductors is found to be ‘x’ m to obtain... more

Kss Kss asked   •  17 hours ago

## The form factor is the ratio of -a)Peak value to r.m.s valueb)r.ms, value to average valuec)Average value to r.m.s. valued)None of theseCorrect answer is option 'B'. Can you explain this answer?

Meera Cherian asked   •  17 hours ago

## In a 3-core extra-high voltage cable, a metallic screen around each core-insulation is provided toa)Facilitate heat dissipationb)Give mechanical strengthc)Obtain longitudinal electric stressd)None of the aboveCorrect answer is option 'C'. Can you explain this answer?

Vivek Gautam asked   •  17 hours ago

## A series resonant circuit has an inductive reactance of 1000W, a capacitive reactance of 1000W and a resistance of 0. 1W. If the resonant frequency is 10 MHz, then the bandwidth of the circuit will bea)1 kHzb)10 kHzc)1 MHzd)0.1 kHzCorrect answer is option 'A'. Can you explain this answer?

Mahesh547 Sandanaveni asked   •  17 hours ago

## Which instrument has the same calibration for ac & dc values ?a)Induction typeb)Hot wire typec)Moving coil typed)Moving iron typeCorrect answer is option 'B'. Can you explain this answer?

Indrajit Mal asked   •  17 hours ago

## A pure capacitance connected across 50Hz, 230V supply consumes 0.04W. This consumption is attributed toa)ohmic loss due to ohmic resistance of platesb)loss of energy in dielectricsc)capacitive reactance in ohmsd)both (a) & (b)Correct answer is option 'D'. Can you explain this answer?

Maria Fatima asked   •  17 hours ago

## In an operational transconductance amplifier if the bias current is 1mA, find the value of its transconductance gm.?

Vaishali More asked   •  17 hours ago

## Which of the following ICs has only one NAND gate?a)7410b)7420c)7430d)7447Correct answer is option 'C'. Can you explain this answer?

Sai Kiran asked   •  17 hours ago

## If Pc & Psc represent core & full-load ohmic losses respectively, the maximum KVAdelivered to load corresponding to maximum efficiency is equal to rated KVA multiplied bya)Pc/Pscb)√Pc / Pscc)(Pc/Psc)2d)(Psc/Pc)2Correct answer is option 'B'. Can you explain this answer?

KUMARI RENU asked   •  18 hours ago

## With regard to the filtering property, the lead compensator and the lag compensator are, respectively.a)low pass and high pass filtersb)high pass and low pass filtersc)both high pass filtersd)both low pass filtersCorrect answer is option 'B'. Can you explain this answer?

Bindu Reddy asked   •  18 hours ago

## The photo electric current in amperes per watt of incident light depend ona)frequency of incident lightb)intensity of incident lightc)frequency & intensity of incident lightd)frequency wavelength and intensity of incident lightCorrect answer is option 'A'. Can you explain this answer?

Jaydeep Parmar asked   •  18 hours ago

## Q.1 A capacitor C in series with a resistor R is connected to a DC source of E volts. Find an expression for: a) Charge q as a function time. b) Charging current. c) Charging voltage. d) Voltage across resistor. e) Voltage ac... more

Harshit Verma asked   •  18 hours ago

## The given circuit has a feedback factor ofa)– RC/ RSb)– RE/RCc)– RE/RSd)– RC/RECorrect answer is option 'D'. Can you explain this answer?

Vineet Shounda asked   •  18 hours ago

## Starting torque of an indication motor is low or slightly more than full load torque ?

Nitin Negi asked   •  18 hours ago

## The capacitance and loss angle of a given capacitor specimen are best measured bya)Wheatstone bridge.b)Maxwell bridge.c)Anderson bridge.d)Schering bridge.Correct answer is option 'D'. Can you explain this answer?

Sayan Chakraborty asked   •  18 hours ago

## An iron ring with a mean diameter of 25 cm is wound with 500 turns. Assuming the relative permeability of iron to be 400, find: . (iv) Find the value of coil current if the same flux density [as in part (i)] is to be maintain... more

Sunilbabu Kollapu asked   •  18 hours ago

## The breakdown voltage of a cable depends upona)presence of moistureb)operating temperaturec)time of application of the voltaged)all of the aboveCorrect answer is option 'D'. Can you explain this answer?

Akash Chowdhury asked   •  18 hours ago

## In a purely resistive circuit, the average power is ____ the peak power Pmaxa)doubleb)one half ofc)one fourthd)equal toCorrect answer is option 'B'. Can you explain this answer?

Meera Cherian asked   •  18 hours ago

## The charging current in a transmission line increases due to corona effect because corona increasesa)Line currentb)Effective line voltagec)Power loss in linesd)The effective conductor diameterCorrect answer is option 'D'. Can you explain this answer?

AYUSH RAO asked   •  18 hours ago

## A 10 kVA, 400 V/200V single phase transformer with 10% impedance draws a steady short circuit line current ofa)50 Ab)150 A .c)250 Ad)350 ACorrect answer is option 'C'. Can you explain this answer?

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