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#1
May 27th, 2014, 10:57 AM
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 Nuclear Power Corporation of India Ltd Mechanical stream papers
I want to give the entrance exam of Nuclear Power Corporation of India Ltd Mechanical stream and for that I want to get the previous year question papers so can you provide me that?
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#2
May 28th, 2014, 10:32 AM
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| Re: Nuclear Power Corporation of India Ltd Mechanical stream papers
As you want to get the previous year question papers of entrance exam of Nuclear Power Corporation of India Ltd Mechanical stream so here is the information of the same for you: Q. Power diode is generally made from a) Silicon b) Germanium c) Both d) None of these Q. When the both junction of NPN diode is reverse biased, then the diode is in which mode a) Active b) Cutoff c) Saturation d) inverted Q. Which transistor mode gives the inverted output a) Common Emitter b) Common Base c) Common Collector d) None of these Q. Which coupling gives the higher gain in case of amplifier a) Capacitor coupling b) Impedance coupling c) Transformercoupling Q. Which distortion is least objectionable in audio amplification a) Phase b) Frequency c) Harmonic d) Intermediation Q. A narrow band amplifier has a band pass nearly…………of central frequency a) 33.3% b) 10% c) 50% Q. Phase shift oscillator consists a) RL b) RC c) RLC Q. Multivibrater Produces a) Sine wave b) Square wave c) Smooth wave d) sawtooth Q. Convert the 101101 Binary number into octal no a) 65 b) 55 c) 51 d) 45 Ans: 55 Q. 10 in BCD a) 10100 b) 1100 c) 010111 d) None of these Ans: None of these Q. Which PNP device has a terminal for synchronizing purpose a) SCS b) Triac c) Diac d) SUS Q. Addition of indium in semiconductor crystal makes a) PNP b) NPN Q. Free electron exists in which band a) 1 b) 2 c) 3 d) Conduction band Q. Ripple factor of half wave rectifier a) 1.21 b) 0.48 c) 0.5 Q. Transistor that can be used in enhancement mode a) NPN b) UJT c) JFET d) MOSFET Q. Following contributes to harmonic distortion in Amplifier a) +Ve feedback b) –Ve feedback c) Defective active device Q. High cutoff frequency a) CB b) CC c) CE Q. Which is used as data selector? a) Encoder b) Decoder c) modulator d) Demodulator Q. Read write capable memory a) RAM b) ROM c) Both d) None of these Q.the radix or base of hexadecimal number system is ———– a) 8 b) 16 c) 5 d) none of these Ans: 16 Q.the no of 1’s in the binary representation of the expression 162*9+162*7+16*5+3 are a) 10 b) 23 c) 6 d) 4 Q. the no of latches in F/F are ——- a) 1 b) 2 c) 3 d) 4 Q.how many flip-flops are required to construct Mod -12 counter a) 5 b) 4 c) 12 d) none Ans: 4 Q. which logic gate has the output is compliment of its input ———- a) OR b) AND c) NOT d) X-OR Ans: NOT Q.no.of 2-input multiplexers needed to construct a 210 input multiplexer……. a) 12 b) 31 c) 20 d) 16 Q.By adding inverters to the inputs and output of a AND gate we can obtain …………… a) OR b) AND c) NOT d) X-OR Ans: X-OR Q.how many NAND gates are needed to realize OR gate ————– a) 1 b) 2 c) 3 d) 4 Ans: 3 Q.which is the first integrated logic family ————— a) RTL b) DTL c) TTL d) none of these Q. Which logic gate has output high if and only if all inputs are low ———? a) NOR b) NAND c) X-NOR d) AND Ans: NAND Q.According to Boolean algebra 1+A+B+C = a) A b) A+B+C c) 1 d) none of these Ans: 1 Q. If a=0x6db7 and b=0x2ae9 then what is the value of a”b————– a) binary number for 1001.1101? b) decimal number for 19? c) excess-3 code for 29? Q.what is the value of A’+1 ? a) A b) A’ c) 1 d) none of these Ans: 1 Q.2 in 4 bit number one bit indicates sign of the number then the locations are from a) -8 to 8 b) -7 to 7 c) -16 to 16 d) None Q.Avalanche photo diode is used when compared to PIN diode bcz a)larger band width b)high sensitivity C)——- d)——– Q.some non zero DC voltage is to RC low pass circuit then the DC voltage in the output contains a) Same as in input b) Higher than input c) Zero d) Slightly increases Q.if the output of the gate is always high then the gates applied to this logic are 0,0 a) NAND and EX-NOR b) NAND and NOR c) AND and X-NOR d) OR and XOR Ans:a Q.Thermal Run away is not possible in FET bcz the flow of a)minority careers b)Transconductance c)_____ d)none Ans : minority careers Q.which of the following is/are true about 1′s and 2′s compements: i)In 1′s complement form. 0 has two representations ii)in 1′s complement, the magnitude of lowest number is equal to the magnitude of highest number iii)In 2′s complement, 0 has two representations a) i only b) i and ii c) iii only d) all of these Q.In the hybrid parameter model of a transistor reverse transfer voltage ratio and forward transfer current ratio are respectively given by: a) h11 and h21 b) h12 and h11 c) h21 and h11 d) None of these Q.The largest negative no can be represented with 8 bits in 2′s compliment representation? a)-256 b)-255 c)-127 d)-128 Ans: -128 Q. How many NAND gates required to implement AB+CD+EF a) 1 b) 2 c) 3 d) 4 Ans: 4 Q. Transparent latch is seen in which type of flip flop a) SR FF b) D FF c) JK FF d) D FF Ans: D FF Q. Odd parity generator uses which logic? a) Digital b) Analog c) Sequential d) none Q. Which type of ADC is fastest? a) SARC b) Counter type c) Intigrated type d) Flash ANS: Flash/Parallel Q. Which one of the following is fastest read/writable memory? a) PROM b) EEPROM c) Flash d) none Ans: Flash 8. In array programming which one is used a) SISD b) PISD c) MISD d) None Q.Which one of the following has high I/p impedance a) CC b) CB c) CE d) None Q. The maximum time allowed time for each flip flop for a mod 10 synchronous counter if each flip flop delay is 25ns. a) 25 ns b) 50 ns c) 100 ns d) none Q. The resolution for a DAC is given by 0.4% then no. of bits of DAC is a) 8- bits b) 16- bits c) 32- bits d) none Ans: 8- bits 41) The chip capacity is 256 bits, then the no.of chips required to build 1024 B memory Is a) 32 b) 16 c) 15 d) 4 Q. Which of the following are correct? 1)A flip-flop is used to store 1-bit of information 2)Race around condition occurs in JK flip flop when both the inputs are 1 3)Master slave flip flop is used to store 2 bits of information 4)A transparent latch consists of a D- flip flop a) 1,2,3 b) 1,3,4 c) 1,2,4 d) 2,3,4 Ans: 1,2,4 Q. output resistance of ideal OP AMP is a) 0 b) 1 c) infinite d) very high ANS: 0 Q. CMRR of an OP AMP is given as 80db and Ad is 20000.Value of Acm will be a) 4 b) 8 c) 2 d) 1 Ans: 2 Q.Si,Ge lie in ……..block of periodic table a) III b) V c) IV A d) IV B Ans: IV A Q.to obtain 10 mV resolution on 5 V range how many bit DAC is to be used a) 4 b) 8 c) 16 d) 32 Q.% resolution of a 10 bit ADC a) 1.588% b) 0.392% c) 0.0978% d) 0.0244% Ans: 0.0978% Q.Efficiency of half wave rectifier a) 45% b) 50% c) 86% d) 100%
__________________ Answered By StudyChaCha Member |
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#3
October 27th, 2015, 02:50 PM
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| Re: Nuclear Power Corporation of India Ltd Mechanical stream papers
I want the question paper of Mechanical engineering of Nuclear Power Corporation of India Ltd NPCIL Executive Trainees exam so can you provide me?
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#4
October 27th, 2015, 02:52 PM
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| Re: Nuclear Power Corporation of India Ltd Mechanical stream papers
Ok, as you want the question paper of Mechanical engineering of Nuclear Power Corporation of India Ltd NPCIL Executive Trainees exam so here I am providing you. NPCIL Executive Trainees exam Mechanical question paper During the execution of a CNC part program block NO20 GO2 X45.0 Y25.0 R5.0 the type of tool motion will be A) circular Interpolation — clockwise B) circular Interpolation — counterclockwise C) linear Interpolation D) rapid feed Answer : (A) In an interchangeable assembly, shafts of size 25.000+0.040mm mate with holes of size 25.000+0.020 mm. The maximum possible clearance in the assembly will be A) 10 microns B) 20 microns C) 30 microns D) 60 microns Answer : (D) Stokes theorem connects A) a line integral and a surface integral B) a surface integral and a volume integral C) a line integral and a volume integral D) gradient of a function and its surface integral Answer : (A) When the temperature of a solid metal increases, A) strength of the metal decreaes but ductility increases B) both strength and ductility of the metal decrease C) both strength and ductility of the metal increase D) strength of the metal increases but ductility decreases Answer : (A) In a machining operation, doubling the cutting speed reduces the tool life to 1/8 of the original value. The exponent n in Taylor A) 1/8 B) 1/4 C) 1/3 D) 1/2 Answer : (C) In PERT analysis a critical activity has A) maximum Float B) zero Float C) maximum Cost D) minimum Cost Answer : (B) Environment friendly refrigerant R134a is used in the new generation domestic refrigerators. Its chemical formula is A) CH C1 F2 B) C2 C13 F3 C) C2 C12 F4 D) C2 H2 F4 Answer : (D) NPCIL Executive Trainees exam Mechanical question paper   
__________________ Answered By StudyChaCha Member Last edited by Aakashd; August 12th, 2018 at 08:44 AM. |
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