Propagation Delay Question & Answers October 14, 2022 By WatElectronics This article lists 30 Propagation Delay MCQs for engineering students. All the Propagation Delay Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, or interviews, or professionals who would like to brush up on the fundamentals of Propagation Delay. Propagation delays must be focussed on by electrical engineers when creating ICs. Modern integrated circuits built have gates in billions and the speed of operation is incredible. If a delay of propagation in IC is inconsistent it causes race conditions as well as errors in data on the chip. Propagation delays are considered an important aspect of designing high-speed circuits. It also limits the speed of processing at which the processor runs. It is also defined as the time acquired by components individually known as Logic gates; time taken for signals to be moved from a certain point to another one and in such situations, it is also referred to as Gate delay. Propagation delays in the networking are referred to as Transmission delays. Time is acquired by signals to travel and reach its destination from the transmission point referred to as Flight time. The speed of the signal and the overall traveling distance are the main factors that form the overall delay of propagation. Propagation delays are also dependent upon the type of logic families used. It can be either TTL (Transistor-transistor logic) or CMOS (Complementary Metal-oxide Semiconductor). These delays are measurable in picoseconds or nanoseconds. 1). Time required by signal to receive after it’s been sent is referred to as __________. Time Delay Phase Delay Propagation Delay Angular Delay None Hint 2). ______________ is focussed primarily in designing of electronic circuits. Time Delay Phase Delay Propagation Delay Angular Delay None Hint 3). What is the basic limit of the delay caused due to propagation? Light Speed Vacuum Speed Gas speed Water Speed None Hint 4). Propagation delays measurable in __________. Nanoseconds Picoseconds Microseconds a & b None Hint 5). What is the cause of data error on IC chips? Time Delay Phase Delay Propagation Delay Angular Delay None Hint 6). What is propagation delay called in networks? Transmission Delay Time of Flight Gate Delay a & b None Hint 7). Differences in __________of various logic gates leads to glitches in circuits. Time Delay Phase Delay Propagation Delay Angular Delay None Hint 8). Propagation delay increase with _____________. Conductance Inductance Operating Temperature Operating Voltage None Hint 9). What refers to Propagation delay in the logic gate? Rise Time Fall Time a & b None None Hint 10). Why do logic gates have propagation delays? Inherent Capacitance Inductance Operating Temperature Operating Voltage None Hint Propagation Delay MCQs for Interviews 11). Bus lines with inserted repeaters reduce ________. Time Delay Phase Delay Propagation Delay Angular Delay None Hint 12). Propagation delay is __________. Constant Variable Dynamic Changeable None Hint 13). Technology node scaling gets degraded with _____________. Time Delay Phase Delay Propagation Delay Angular Delay None Hint 14). Propagation delay can be calculated as ___________. Distance/Propagation Speed Propagation Speed/ Length Length/ Distance Wavelength/ Medium Length None Hint 15). Are Propagation delay and frequency related? Yes Change in Frequency Cause Propagation Delay Doesn’t Matter Change in Frequency Proportional to Propagation Delay None Hint 16). Why do propagation delays occur in the cables? Cable Strength Too Long Cable Too Short Cable Cable is Thick None Hint 17). What are the components of FPGA Propagation delay? Logic Delay Routing Delay Simulation Delay a & b None Hint 18). What can be the Propagation delay range of Logic gates? Nanoseconds Picoseconds Microseconds Macroseconds None Hint 19). Propagation delays in PCB are based on __________. Dielectric Constant Geometry Trace Component Used a & b None Hint 20). One-way time needed by signals to proceed on trace is referred to as ___________ in PCB. Logic Delay Routing Delay Simulation Delay Propagation Delay None Hint Propagation Delay MCQs for Exams 21). Propagation delay doesn't depend on _________. Packet Length Link Transmission Rate Transmission Medium a & b None Hint 22). TTL has Propagation delay of _______. 10 ns 20 ns 30 ns 40 ns None Hint 23). Propagation delay of _________ affects the ripple counter speed. Flip-flop Gates Flip-flops with Gates Circuit Gates None Hint 24). Overall delay in propagation of Carry Save Adder is ___________. Sum of Propagation Delays Product of Propagation Delays Dividing and Summing Up Delays Sum of All Delays None Hint 25). What reduces Propagation delay in digital electronics? Carry Save Adder Carry Adder Carry Look Ahead Adder Full Adder None Hint 26). Full adder circuit employed with the fast gates can reduce ____________. Time Delay Phase Delay Propagation Delay Angular Delay None Hint 27). Sequential logic with long delay in propagation leads to _________. Faster the Clock Slower the Clock Maximize Speed Maximize Propagation Time None Hint 28). How propagation delays can be fixed in FPGAs? Slow Down Clock Frequency Break Logic Up into Stages Fast the Clock Frequency a & b None Hint 29). Given the following that has the least delay in propagation? CMOS DTL TTL RTL None Hint 30). What is the propagation delay of MOS family Logic gates? 2 ns 10 ns 12 ns 70 ns None Hint Please fill in the comment box below. Time's up
