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If YOU are an Electrical Engineer then following quiz is for YOU 0% 2 Electrical Engineering Smart Series Quiz-1 These questions are taken from smart series book which covers all the subjects of Electrical Engineering and Technology Field 1 / 30 Category: Probability 1) What is the probability of a number “2” when a dice is thrown? a) 2/6 b) 1/3 c) 1/6 d) 1/4 2 / 30 Category: Singal and Systems 2) The _____ time signal is described for all values of time. a) Discrete b) Continuous c) Random d) Digital 3 / 30 Category: Power Transmission and Distributions 3) Which of the following conditions relate line resistance ‘R’ and line reactance ‘X’ for maximum steady state power transmission on a transmission line? a) X=R b) R=[Square Root (3)]*X c) X=[Square Root (3)]*R d) X=R / [Square Root (3)] 4 / 30 Category: Power Electroncis 4) If the firing angle in an SCR rectifier is decreased, output will be a) Maximum b) Increased c) Decreased d) Unaffected 5 / 30 Category: Power System Analysis 5) There are ____ types of dependent sources, depending on the controlling variable and output of the source. a) Two b) Three c) Four d) Five 6 / 30 Category: Singal and Systems 6) Main purpose of modulation process is to a) Distort the original signal b) Add extra noise to the signal c) Reduce the mutual interference d) Time shift in frequency e) Increase signal to noise ratio 7 / 30 Category: Power System Analysis 7) Power in AC circuit is found by a) VI sin (phi) b) VI tan (phi) c) VI cos (phi) d) VI 8 / 30 Category: Telecommunications 8) Modulation index in amplitude modulation a) Is defined as the measure of extent of amplitude variation about an un-modulated carrier. b) Does not impact power dissipation c) Is independent of integral multiple of amplitude d) None of these 9 / 30 Category: Basic Electrical Engineering 9) Fourier series are infinite series of elementary trigonometric functions i.e. Sine and a) Cosine b) Sec c) Cosec d) Tan We have to maintain flatness of the surface. 10 / 30 Category: DC Machines 10) The Pole Shoes of DC Machines are fastened to the pole core by: a) Welding b) Soldering c) Countersunk Screws d) Steel Clumps Countersunk Screws have flattened head which provide flat and smooth surface to avoid any irregulation in pole flux. 11 / 30 Category: Power Plant 11) If field resistance of DC shunt generator is increased beyond its critical value, the generator a) output voltage will exceed its nameplate rating b) will not build up c) may burn out if loaded to its nameplate rating d) power output may exceed its nameplate rating 12 / 30 Category: Basic Electrical Engineering 12) At very sunny places this source(s) of energy can be found a) Jet fuel b) Geothermal c) Solar d) Both B & C 13 / 30 Category: Electroncis 13) SCR (Silicon Controlled Rectifier) goes into saturation, when gate-cathode junction is a) Forward biased b) Reversed biased c) In steady state d) Polarized 14 / 30 Category: Network Analysis 14) Admittance is the reciprocal of a) Capacitive reactance b) Inductive reactance c) Reactive power d) Impedance 15 / 30 Category: Electroncis 15) Discrete device field effect transistor is classified on the basis of their a) Resistive state b) Conducting state c) Voltaic state d) Control gate construction 16 / 30 Category: Electrical Machines 16) Fundamental property used in single node pair circuit analyzer is that ______ across all elements is same. a) Current b) Voltage c) Resistance d) Inductance 17 / 30 Category: Basic Electrical Engineering 17) If the input capacitor of a power supply is shorted, it will result in a) Excessive hum b) Reduced voltage output c) No voltage output d) Low voltage output 18 / 30 Category: Electroncis 18) A semiconductor device is connected in a series circuit with a battery and a resistance. If the polarity of battery is reversed, the current drops almost to zero. The device may be a) P-type semiconductor b) N-type semiconductor c) P-N junction d) An intrinsic semiconductor 19 / 30 Category: Power Plant 19) The average fossil fuel plant convers about is ______ % of the power going in to the power going out. a) 33 b) 40 c) 25 d) 50 20 / 30 Category: Electrical Machines 20) Radio frequency chokes are air cored to a) Keep frequency low b) Keep inductive reactance low c) Keep frequency high d) Keep inductive reactance high 21 / 30 Category: Basic Electrical Engineering 21) Which line is obtained by the method of least square? a) Straight line b) Second degree equation line c) Polynomial equation line d) Best fit line 22 / 30 Category: Power Transmission and Distributions 22) Drop out to cut off ratio for most relays is of the order of a) 0.2 to 0.3 b) 0.3 to 0.4 c) 0.4 to 0.6 d) 0.6 to 1.0 23 / 30 Category: Power System Analysis 23) Which of the following ideas means deciding at runtime what strategy to summon? a) Dynamic typing b) Dynamic hiding c) Dynamic loading d) Dynamic blinding 24 / 30 Category: Power Plant 24) Landfill gas is actually _______ used in thermal power plants. a) Methane b) Ethane c) Black Liquor d) Phosphorus 25 / 30 Category: Power Transmission and Distributions 25) For which purpose bundled conductors are employed to a power system a) Appearance of the transmission line b) Mechanical stability of the line c) Decrease system stability d) Increase the short circuit current 26 / 30 Category: Power Plant 26) ______ is a by-product of paper industry, which is used by many industries as a primary source of electricity. a) Landfill gas b) Sludge waste c) Black Liquor d) Wood waste 27 / 30 Category: Basic Electrical Engineering 27) Conjunction x ^ y behaves on digits 0 and 1 exactly as ____ does for ordinary algebra. a) Addition b) Subtraction c) Multiplication d) Division 28 / 30 Category: Power System Analysis 28) The quantity “Rm” which relates dependent voltage to controlling current is called a) Trans Conductance b) Maximum Resistance c) Trans Resistance d) Limiting Resistance We have to maintain flatness of the surface. 29 / 30 Category: Power System Analysis 29) Which of the following are considered as disadvantages(s) of Gauss-Seidel method over Newton Raphson method in load flow analysis? a) More iteration b) More memory requirement and less accuracy c) Less iteration but more memory d) More accuracy and more memory Countersunk Screws have flattened head which provide flat and smooth surface to avoid any irregulation in pole flux. 30 / 30 Category: Electrical Machines 30) A transformer transforms a) Voltage b) Power c) Frequency d) Current e) Both A & D According to NTS the answer is voltage and current, however in actual it is the power which transformer transforms. 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