Description : Which of following consume minimum power (A) TTL. (B) CMOS. (C) DTL. (D) RTL.
Last Answer : Ans: B CMOS consumes minimum power as in CMOS one p-MOS & one n-MOS transistors are connected in complimentary mode, such that one device is ON & one is OFF.
Description : The digital logic family which has minimum power dissipation is (A) TTL (B) RTL (C) DTL (D) CMOS
Last Answer : (D) CMOS The digital logic family which has minimum power dissipation is CMOS. (CMOS being an unipolar logic family, occupy a very small fraction of silicon Chip area)
Description : Which of the following is the fastest logic? (A) ECL (B) TTL (C) CMOS (D) LSI
Last Answer : (A) ECL
Description : The MSI chip 7474 is (A) Dual edge triggered JK flip-flop (TTL). (B) Dual edge triggered D flip-flop (CMOS). (C) Dual edge triggered D flip-flop (TTL). (D) Dual edge triggered JK flip-flop (CMOS).
Last Answer : Ans: C MSI chip 7474 dual edge triggered D Flip-Flop.
Description : The digital logic family which has the lowest propagation delay time is (A) ECL (B) TTL (C) CMOS (D) PMOS
Last Answer : Ans: A The digital logic family which has the lowest propagation delay time is ECL (Lowest propagation delay time is possible in ECL because the transistors are used in difference amplifier configuration, in which they are never driven into saturation and thereby the storage time is eliminated).
Description : Which of the following is the fastest logic (A) TTL (B) ECL (C) CMOS (D) LSI
Last Answer : Ans: B ECL is the fastest logic family of all logic families. (High speeds are possible in ECL because the transistors are used in difference amplifier configuration, in which they are never driven into saturation and thereby the storage time is eliminated.
Description : CMOS circuits are extensively used for ON-chip computers mainly because of their extremely (A) low power dissipation. (B) high noise immunity. (C) large packing density. (D) low cost.
Last Answer : Ans: C Because CMOS circuits have large packing density.
Description : The commercially available 8-input multiplexer integrated circuit in the TTL family is (A) 7495. (B) 74153. (C) 74154. (D) 74151.
Last Answer : Ans: B MUX integrated circuit in TTL is 74153.
Description : Which TTL logic gate is used for wired ANDing (A) Open collector output (B) Totem Pole (C) Tri state output (D) ECL gates
Last Answer : Ans: A Open collector output.
Description : The logic 0 level of a CMOS logic device is approximately (A) 1.2 volts (B) 0.4 volts (C) 5 volts (D) 0 volts
Last Answer : Ans: D CMOS logic low level is 0 volts approx.
Description : What are the classification of sequential circuits?
Last Answer : The sequential circuits are classified on the basis of timing of their signals into two types. They are, 1)Synchronous sequential circuit. 2)Asynchronous sequential circuit.
Description : Karnaugh map is used for the purpose of (A) Reducing the electronic circuits used. (B) To map the given Boolean logic function. (C) To minimize the terms in a Boolean expression. (D) To maximize the terms of a given a Boolean expression.
Last Answer : (C) To minimize the terms in a Boolean expression.
Description : Data can be changed from special code to temporal code by using (A) Shift registers (B) counters (C) Combinational circuits (D) A/D converters.
Last Answer : Ans: A Data can be changed from special code to temporal code by using Shift Registers. (A Register in which data gets shifted towards left or right when clock pulses are applied is known as a Shift Register.)
Description : The radius of a bar bend to form a hook, should not be less than (A) Twice the diameter (B) Thrice the diameter (C) Four times the diameter (D) Five times the diameter
Last Answer : Answer: Option A
Description : The difference of level between a point below the plane of sight and one above, is the sum of two staff readings and an error would be produced equal to (A) The distance between the zero of ... Thrice the distance between the zero of graduation and the foot of the staff (D) None of the above
Last Answer : (B) Twice the distance between the zero of graduation and the foot of the staff
Description : The apparent error on reversal is (A) Equal to the actual error (B) Twice the actual error (C) Thrice the actual error (D) None of these
Last Answer : (B) Twice the actual error
Description : Perpendicular offset from a tangent to the junction of a transition curve and circular curve is equal to (A) Shift (B) Twice the shift (C) Thrice the shift (D) Four times the shift
Last Answer : (D) Four times the shift
Description : A flaky aggregate is said to be elongated if its length is (A) Equal to the mean size (B) Twice the mean size (C) Thrice the mean size (D) Four times the mean size
Last Answer : Answer: Option B
Description : Any number with an exponent of one is equal to 128) A) two. B) itself. C) zero. D) on
Last Answer : B) itself.
Description : Any number with an exponent of zero is equal to 2) A) itself. B) ten. C) zero. D) one.
Last Answer : D) one.
Description : In successive-approximation A/D converter, offset voltage equal to 1/2 LSB is added to the D/A converter's output. This is done to (A) Improve the speed of operation. (B) Reduce the maximum ... Increase the number of bits at the output. (D) Increase the range of input voltage that can be converted
Last Answer : (B) Reduce the maximum quantization error.
Description : -8 is equal to signed binary number (A) 10001000 (B) 00001000 (C) 10000000 (D) 11000000
Last Answer : (A) 10001000
Description : In digital ICs, Schottky transistors are preferred over normal transistors because of their (A) Lower Propagation delay. (B) Higher Propagation delay. (C) Lower Power dissipation. (D) Higher Power dissipation.
Last Answer : Ans: A Lower propagation delay as shottky transistors reduce the storage time delay by preventing the transistor from going deep into saturation.
Description : Twice the number of marbles with Aman exceeds thrice the number of marbles with Vinay by 12. Assume the number of marbles with Aman and Vinay as x and y respectively .Express the statement in the form of a linear equation in two variables. -Maths 9th
Last Answer : answer:
Description : Ninety coins are to be distributed among P,Q and R such that P gets twice as many coins as Q gets and Q gets thrice as many coins as R gets. Find the
Last Answer : Ninety coins are to be distributed among P,Q and R such that P gets twice as many coins as Q gets and Q gets thrice ... R gets. A. 6 B. 3 C. 10 D. 9
Description : The Constitution of India lays down that the two Houses of Parliament must be summoned at least – (1) four times a year (2) thrice a year (3) twice a year (4) once a year
Last Answer : (3) twice a year Explanation: The period during which the House meets to conduct its business is called a session. The Constitution empowers the President to summon each House at such intervals that there ... month's gap between the two sessions. Hence the Parliament must meet at least twice a year.
Description : How many times was the term of the Lok Sabha extended upto 6 years? (1) Once (2) Twice (3) Thrice (4) Never
Last Answer : (1) Once Explanation: The first sitting of the Fifth Lok Sabha was held on 19 March, 1971. The term of the Fifth Lok Sabha, which was to expire on 18 March, 1976, was extended by one ... term of the Lok Sabha was restored to rivet years under the Constitution (Forty fourth Amendment) Act, 1978.
Description : In India, how many times has the President declared Financial Emergency? (1) Once (2) Never (3) Thrice (4) Twice
Last Answer : (2) Never Explanation: No Financial Emergency has been declared so far, though there was a financial crisis in 1991. Article 360 empowers the president to proclaim a Financial Emergency if he is ... to which the financial stability or credit of India or any part of its territory is threatened.
Description : It is customary to design a sewer for D.W.F. on the basis of A. Average demand B. Twice the average demand C. Thrice the average demand D. Four times the average demand
Last Answer : ANS: C
Description : ECE Board Exam March 1996 According to the Nyquist theorem, the sampling rate that can be used in a PCM system is ________ the highest audio frequency. A. once B. eight times C. twice D. thrice
Last Answer : C. twice
Description : If the Earth's magnetic field lines pass through the Hall probe in opposite direction, then the change in reading of voltmeter is A. thrice the Earth's magnetic flux density B. four times the Earth ... C. five times the Earth's magnetic flux density D. twice the Earth's magnetic flux density
Last Answer : twice the Earth's magnetic flux density
Description : In a shell and tube heat exchanger, putting a longitudinal baffle across the shell, forces the shell side fluid to pass __________ through the heat exchanger. (A) Once (B) Twice (C) Thrice (D) Four times
Last Answer : (B) Twice
Description : The minimum bandwidth of Manchester and differential Manchester is ____that of NRZ. A) the sameas B) twice C) thrice D) none of the above
Last Answer : twice
Description : Programmable ROM (PROM), it is basically a blank ROM chip that can be written to, but only__: a) Twice b) Once c) Thrice d) None of These
Last Answer : b) Once
Description : In MS-Word, a word gets selected by clicking the word: a) Once b) Twice c) Thrice d) None of These
Last Answer : b) Twice
Description : The length of the straight portion of a bar beyond the end of the hook, should be at least (A) Twice the diameter (B) Thrice the diameter (C) Four times the diameter (D) Seven times the diameter
Last Answer : Answer: Option D
Description : The discharge through a channel of rectangular section will be maximum, if (A) Its depth is twice the breadth (B) Its breadth is twice the depth (C) Its depth is thrice the breadth (D) Its breadth is thrice the depth
Description : How many times chlorination must be carried out for cooling towers 1. Twice a year 2. Once a year 3. Thrice a year 4. None of above
Last Answer : Twice a year
Description : . How many times year cooling water must be cleaned 1. Once a year 2. Thrice a year 3. Twice a year 4. Four times a year
Description : Ram, Suresh and Shilpa, working together, can do a piece of work in 1 day. Ram is thrice as efficient as Suresh, and Suresh takes twice the number of days as Shilpa takes to do it alone. What is the difference between ... and Shilpa, each working alone, to complete the work? a) 1 b) 2 c) 3 d) 4 e) 5
Last Answer : Let the time taken by Ram, Suresh and Shilpa to finish the work alone be A, B and C respectively Therefore, 1/A + 1/B + 1/C = 1 Also it is given that, A = B/3 and C =B/2 3/B + 1/B + ... between the number of days taken by Ram and Shilpa, each working alone, to complete the work = 3-2 = 1 Answer: a)
Description : A and B established a firm together. A’s investment was thrice that of B’s. A also kept the investment for twice as much time as B. If B got a profit of 4000, what was the total profit? A.30,000 B.28,000 C.40,000 D.45,000
Last Answer : Answer- B(28,000) Explanation:- let B’s investment= X then A’s investment= 3X lets tim for B = t then,A’s time= 2t A:B 3X x 3t : X x t 6:1 B’s share= 1/7 x total = 4000 total=28,000
Description : Ten years ago, Khush was thrice as old as Sam was but 10 years hence, he will be only twice as old. Find Khush’s present age? A.30 B.35 C.40 D.36 E.None of these
Last Answer : Answer - A (30) Explanation - Let Khush's present age be x years and Sam's present age be y years Then, according to the first condition, x - 10 = 3(y - 10) or, x - 3y = -20 ..(1) Now. Khush's age ... (1) and (2), we get x = 70 and y = 30 Khush's age = 70 years and Sam's age = 30 years
Description : A patient of liver cirrhosis with ascitis was treated with hydrochlorothiazide 50 mg twice daily. He responded initially, but over a couple of months the diuretic action gradually diminished ... Add spironolactone 50 mg thrice daily D. Substitute hydrochlorothiazide by spironolactone 50 mg 6 hourly
Last Answer : C. Add spironolactone 50 mg thrice daily
Description : Each term occurs ______ in the syllogism. A) once B) twice C) thrice D) four times.
Last Answer : B) twice
Description : A bus and a truck are available to cross a jungle. The speed of the truck is thrice that of the bus. The capacity of the truck is 60 persons and that of bus is 40 persons. The average occupancy of the bus is twice ... boarding it and its capacity. a) 9:17 b) 17:9 c) 8:27 d) 27:8 e) None of these
Last Answer : Answer: D Average Rupee collection = Speed× capacity × Occupancy × Ticket rate Ratio of average Rupee collection of truck to that of bus= product of above rate According to question, (3×60×1×1.5):(1×40×2×1)= 270:80=27:8
Description : Which numbering formats are really codes rather than true number systems? 96) A) hexadecimal and octal B) binary and octal C) decimal and binary D) BCD and ASCII
Last Answer : Which numbering formats are really codes rather than true number systems?
Description : Define Asynchronous sequential circuit?
Last Answer : In asynchronous sequential circuits change in input signals can affect memory element at any instant of time.
Description : Define synchronous sequential circuit
Last Answer : In synchronous sequential circuits, signals can affect the memory elements only at discrete instant of time.
Description : What are the different types of shift type?
Last Answer : There are five types. They are, Serial In Serial Out Shift Register Serial In Parallel Out Shift Register Parallel In Serial Out Shift Register Parallel In Parallel Out Shift Register Bidirectional Shift Register
Description : Define shift registers.
Last Answer : The binary information in a register can be moved from stage to stage within the register or into or out of the register upon application of clock ... arithmetic and logic operations used in microprocessors. This gives rise to group of registers called shift registers.