2. Using the Henderson-Hasselbalch equation, calculate the concentration ratio ([sodium acetate]/[acetic acid], the amount (number of mole)of acetic acid and sodium acetate, and the volume of 0.1 M acetic acid and 0.1M sodium acetate solutions needed to prepare 110 mL each of the following buffer solutions with concentration of 0.1M: a. Buffer 4, pH 3.76 Same approach as Buffer 1. Refer to the summary table for the preparation of buffers (Table 4). b. Buffer 5, pH 4.76 Same approach as Buffer 1. Refer to the summary table for the preparation of buffers (Table 4). c. Buffer 6, pH 5.76 Same approach as Buffer 1. Refer to the summary table for the preparation of buffers (Table 4).

A reaction mixture was spotted on a TLC plate and the plate was developed. The starting material had one spot at Rf 0.65 (sample Y) and the reaction mixture had a spot at Rf 0.45 (sample X) ----- XY no reaction had occurred. one product with Rf 0.45 was formed one or more products were present, and all have Rf = 0.45 one product was formed but there was still starting material.

Problem 7 A closed-loop feedback system is shown in Fig. 4. For what range of values of the parameters K and p is the system stable? Ris) Ks +! Y15) Fig. 4, Closed-loop system with parameters K and p Problem 8 Arc welding is one of the most important areas of application for industrial robots. In most manufacturing welding situations, uncertainties in dimensions of the part, geometry of the joint, and the welding process itself require the use of sensors for maintaining weld quality. Several systems use a vision system to measure the geometry of the puddle of melted metal, as shown in Fig. 5. This system uses a constant rate of feeding the wire to be melted. Calculate the maximum value for K for the system that will result in a stable system. Controller Wire-melting proces Error Paidie diameter (0.55 + 1/3 + 1) diantar Arc current Desired 1 K 1+2 Vision system Measured diameter 0.005s + 1 Fig. 5, Welder control Problem 9 A cassette tape storage device has been designed for mass-storage. It is necessary to control the velocity of the tape accurately. The speed control of the tape drive is represented by the system shown in Fig. 6. Determine the limiting gain for a stable system. Power implifier Motor and drive mechanism 10 + 207 RE) X $100 Speed

The goal of vertical takeoff and landing (VTOL) aircraft is to achieve operation from relatively small airports and yet operate as a normal aircraft in level flight. An aircraft taking off in a form similar to a missile (on end) is inherently unstable. A control system using adjustable jets can control the vehicle, as shown in Figure 2. (a) Determine the range of gain for which the system is stable. (b) Determine the gain K for which the system is marginally stable and the roots of the characteristic equation for this value of K. Aircraft dynamics R(S) Desired vertical Controller K(s + 2) s + 10 Y(s) Actual vertical path s(s – 1) path Figure 2: Control of a jumpjet aircraft. (C) Is it possible to examine the BIBO stability of a system only by doing input-output experiments without knowing its transfer function? Why or why not?

A 100 mm by 50 mm Venturi meter is installed in a 100 mm diameter pipe to measure the flow of a certain liquid (sp gr 1.20). A differential gage connected with the inlet and throat contains a substance (sp gr 1.5) in the lower part of the tube, the remainder of the tube being filled with the certain liquid. The difference in height of water columns in the two legs of the tube is 75 cm. If the coefficient of the meter is 0.97, compute the actual discharge. A Venturi meter 45 cm by 20 cm has its axis inclined upwards 300 from the horizontal. The distance measured along the axis, from the inlet to the throat is 1.20m. The differential manometer shows a deflection of 25 cm of mercury. If the flowing fluid has specific gravity of 2.0, find the discharge if C = 0.96. A 50 mm venturi meter (C = 0.98) is installed in a 75 mm diameter horizontal pipe carrying oil having specific gravity of 0.83. If the recorded flow in the meter was 25 liters per second, what could have been the deflection of water in the differential manometer connected between the inlet and the throat?

Complete the implementation of the print_hello function, according to the following specification: Parameters: The function expects no arguments. Returns: The function produces no result (i.e. the return type is void). Process: 0 Emi t the text "Salutations I hope you enjoyfollowed by a linefeed character, to the standard output stream. Notes When a person having student number n9999999 completes the exercise, the results look similar to the following image. Your version of the question may request a different message, so make sure you display the requested message and student number rather than simply copying from the image. bash $./print hello Hello n9999999, welcome to CAB202! Use this test driver to implement and test your function prior to submission. #include <stdio.h> woid print_hello0 [ // Insert your solution here.

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Q1- Consider the following two cache configurations. Determine which configuration is faster? Parameter of configurationl: L1 Cache Size = 1 MB: L1 Hit Rate = 92%; L1 Access Time = 4 ns; Main Memory Access Time = 100 ns. Parameter of configuration 2: L1 Cache Size = 256 KB: L2 Cache Size = 768 KB; Li Hit Rate = 70%; L2 Hit Rate = 85%: L1 Access Time = 2 ns: L2 Access Time = 8 ns: Main Memory Access Time = 100 ns.

QUESTIONS: 1. State some software tools that manipulate source program? 2. What is the need for separating the analysis phase into lexical analysis and parsing? (Or) What are the issues of lexical analyzer? 3. What are the Error-recovery actions in a lexical analyzer?