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Re: Digital Circuits Exam Paper
This is the Digital Circuits Exam Paper For Various Competitive Exams: Q.1.The number of digits in octal system is? 8 7 8 or 7 10 Q.2.The number of digits in hexadecimal system is? 15 10 16 8 Q.3.The number of bits in a nibble is? 8 2 4 16 Q.4.The digit F in hexadecimal system is equivalent to number...........in decimal system? 16 15 17 8 Q.5.Which of the following binary number is equivalent to decimal 10? 1010 1000 1001 1100 Q.6.The number FF in a hexadecimal system is equivalent to number..........in a decimal system ? 256 240 255 239 Q.7.ICs are? analog digital both Analog and digital mostly analog Q.8.The rate of change of digital signals between High and low level is? very fast fast slow very slo Q.9.Digital circuits mostly use? Diodes Bipolar transistors Diodes and bipolar transistor Bipolar transistors and FETs Q.10.Two voltages are-5V and-10V.In positive logic? -5V is 1 and -10V is 0 -10 Vis 1 and-5V is 0 -5V is 1 and -10V is1 -5V is 0 and -10V is 0 Q.11.Logic Pulser ? generate short duration pulses generate long duration pules generate ideal pulses None of these Q.12.The number of LED displays in duration in logic probe are? 1 2 4 1 or 2 Q.13.The output impenitence of a logic pulser is? Low High May be low or high Can't say Q.14.A current transducer respond to? steady current only pulsating current only both pulasting and steady none of these Q.15.Logic analyser is? a multi channel oscilloscope similar to logic pulser similar to current tracer none of above Q.16.Which of these are two state device? Lamp magnetic tap punched card All the above Q.17.In the decimal number 27,the digit 2 represent ? 2 0.2 20 200 Q.18.In Hexadecimal number system,A is equal to decimal number? 10 17 11 18 Q.19.Hexadecimal number F is equal to octal number? 15 17 16 18 Q.20.Hexadecimal number E is equal to binary? 1110 1001 1111 1101 Q.21.Binary number 1101 is equal to octal number? 17 15 16 14 Q.22.ocatal number 12 is equal to decimal number? 8 9 11 10 Q.23.100101 is equal to decimal number ? 27 37 17 47 Q.24.Decimal number 10 is equal to binary number? 1110 1001 1010 1000 Q.25.Decimal number 110011011001 is equal to decimal number? 3289 1289 2289 289 |
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