Engineering, 21.10.2020 17:01 reneek272

The circuit functions as a sequential combination lock. To operate the lock, proceed as follows:1. Momentarily activate the RESET switch.2. Set the switches SWA, SWB, and SWC to the first part of the combination. Then momentarily toggle the ENTER switch back andforth.3. Set the switches to the second part of the combination, and toggle ENTER again. This should produce a HIGH at Q2 to open the lock. If the incorrect combination is entered in either step, the operator must start the sequence over. Analyze the circuit and determinethe correct sequence of combinations that will open the lock. b) When the combination lock is tested, it is found that entering the correct combination does not open the lock. A logic probe check shows that entering the correct first combination sets Q1 HIGH, butentering the correct second combination produces only a momentary pulse at Q2. Consider each of the following faults and indicate which one(s) could produce the observed operation. Explain each choice.(a) Switch bounce at SWA, SWB, or SWC.(b) CLR input of Q2 is open.(c) Connection from NAND gate 4 output to NAND gate 3 input is o

Answers: 1

Show answers

Another question on Engineering

Engineering, 03.07.2019 15:10

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

Answers: 3

Answer

Engineering, 04.07.2019 18:10

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Answers: 2

Answer

Engineering, 04.07.2019 18:10

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Answers: 1

Answer

Engineering, 04.07.2019 18:10

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

Answers: 2

Answer

You know the right answer?

The circuit functions as a sequential combination lock. To operate the lock, proceed as follows:1. M...

Questions