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in many applications binary ripple counters are found to be very slow one possible approach to speed up counting is to
design a circuit that receives serially the output of the 4-bit ring counter in exercise 7 and produces an output of 1
1 design a mod-12 counter using a shift register and appropriate feedback logic2 implement a 4-bit ring counter using
1 a balanced three-phase 240-v source supplies a balanced three-phase load if the line current ia is measured to be 5 a
1 a three-phase transmission link is rated 100 kva at 2300 v when operating at rated load the total resistive and
a circuit for implementing a combinational lock is to be designed the circuit has two inputs x1 and x2 and an output z
find all the races in the following table and indicate if they are critical or notfind a state assignment that is
a 9375 kva 13800 kv 60 hz two pole y-connected synchronous generator is delivering rated current at rated voltage and
a 5-k va 220-v 60-hz six-pole y-connected synchronous generator has a leakage reactance per phase of 078 ohms and
a rotating electromechanical energy conversion device has the following inductances in terms of 8 in radians theta
1 consider a toroidal coil with relative permeability of 1500 with a circular cross section whose radius is 0025 cm the
the following information is available about a 40 mva 20-kv400 kv single phase transformerusing the transformer rating
repeat problem 212 using per unit values assuming that 1000 kva is base apparent power and 3 omega is the base
assume that the base voltage is 4600 v in the system of problem 211 and that 50 mva is the corresponding apparent power
assume for the motor of problem 23 that 50 kw and 440 v are taken as base values find the voltage in per unit at the
consider the transmission link of problem 22 and choose 100 kva and 2300 v as base kva and voltage determine the input
assume that 30 v and 5 a are chosen as base voltage and current for the circuit of problem 21a find the corresponding
a y-connected capacitor bank is connected in parallel with the loads of problem 213 finda the total kvar and
three loads are connected in parallel across a 1247 kv three-phase supply the first is a resistive 60 kw load the
the impedance of a three-phase line is 03 j24 per phase the line feeds two balanced three-phase loads connected in
for the machine of problem 318 assume that the active power supplied to the bus is 08 pu compute the power angle and
a salient-pole synchronous machine is connected to an infinite bus whose voltage is kept constant at 105 pu the direct
the equivalent impedance referred to the primary of a 23001230-v 500-kva single-phase transformer iscalculate the
a 500100 v two-winding transformer is rated at 5 kva the following information is availablea the maximum efficiency of
repeat problem 56 for bundle spacing of 24 in and subconductor gmr of 005 15 ft assume phase separation is 45 ftproblem