Q4 (a) Figure Q4(a)(i) shows two unit of 74LS293 (4-bit binary counter) configured to generate multiple clock source. Referring to the internal circuit diagram of this IC shown in Figure Q4(a)(ii), obtain the frequency at fi, f2 and f3. f2 f3 f1 (10) CP 1 (8) (10) CP (8) 100HZ- Q4 (11) CP (4) (11) CP (4) Q2 Q2 (5) Q! Q1 (5) (12) MR, & (9) QO (12) MR, & (9) QO (13) MR (13) MR Figure Q4(a)(i) 2.

What special property does this material have that makes it useful in a copy machine?

a. What is the ampere rating of the circuits that are provided for the small-appliance loads? _____ b. What is the minimum number of small-appliance circuits permitted by the Code? _____ c. How many small-appliance circuits are included in this residence? ____

What is the purpose of specifications?

The temperature dependence of resistance is also quantified by the relation R2=R1[ 1+(T2T1) ] where R1 and R2 are the resistances at temperatures T1 and T2, respectively, and is known as the temperature coefficient of resistance. If a copper wire has a resistance of 55 at 20C, find the maximum permissible operating temperature of the wire if its resistance is to increase by at most 20. Take the temperature coefficient at 20C to be =0.00382.

Reconsider Problem 3.29. If Va,VbandVc are a negative-sequence set, how would the voltage and current relationships change? (a) If C1 is the complex positive-sequence voltage gain in Problem 3.29 and (b) if C2 is the negative sequence complex voltage gain, express the relationship between C1andC2

How is a solid-state diode tested? Explain.

How many digits will the 312- and 412-digit displays have?

What is the difference between an SCR and a GTO?

What is the advantage of using solid-state devices in electronic control systems?