Q3) A) select the correct answer:- 1. In a proportional temperature controller, if the quantity under the heater increases the offset will: a) Increase b) Reduce c) Remain uneffected d) None of the above 2- In a PID controller, the overshoots has increased. The derivative time constant has to be so as to reduce the overshoots: a) Increased b) Reduced c) Reduced to zero d) None of the above 3. Which one of the following is not the property of root loci? a) The root locus is symmetrical about imaginary axis b) They start from the open loop poles and terminate at the open loop zeroes c) The breakaway points are determined from dK/ds = 0
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- When the electromotive force is removed from a circuit Containing inductance and resistance but no capacitors, the rate of decrease of the current is proportional to the current. If the initial current is 30 amp and it's down to 1 amp after 0.01 sec, what is the current after 0.03 sec?solve for the capacitor (Filter) values of the Half-wave Design a half-wave rectifier with a filter for the following conditions: a) The peak input voltage is 10 V. Input frequency is 60 Hz. b)Use virtual diode (VON = 0.7 V). c)The minimum output voltage should be at least 90% of the maximum output voltage. d)The load resistance may vary from 1.5 k ohm to 2.5 k ohm. Instructions: ~ Vomax = 10 - 0.7 = 9.3 V; Vomin = 0.9xVomax; angleV = Vomax- Vomin~ fin =60Hz; fp =60Hz.~ Use the smallest value of load resistance (1.5 k ohm) to calculate the capacitor value.~ Use the above calculated capacitor value (same value) to build 2 circuits (half-waverectifier with a filter), with load resistance of 1.5 kohm and 2.5 kohm, respectively.~ Note: The same capacitor value is applied to the load resistance of 1.5 kohm and 2.5 kohm,respectively.Example 2: calculate the RMS noise voltage arising from thermal noise in two resistors 100 & 150 resp. at T= 300°K within a bandwidth of IMHZ if: a- The resistors are connected in series. b- The resistors are connected in parallel.
- The operation of the fuel pump for an automobile depends on the reciprocating action of the rocker arm ABC, which is pinned at B and is spring loaded at A and D. The smooth cam C is in the position shown. The vertical force acting on the rocker arm at A is F₁60 N, and at C it is Fo 155 N (Eigure 1) Figure 50 mm Figure 10 mm 50 mm The operation of the fuel pump for an automobile depends on the reciprocating action of the rocker arm ABC, which is pinned at B and is spring loaded at A and D. The smooth cam C is in the position shown. The vertical force acting on the rocker arm at A is F =60 N. and at C it is Fe=155 N. (Figure 1) 20 mm- 10 mm 1 of 1 mm. 1 of 1 Part A Z Determine the and y components of the reaction force on the rocker arm ABC at the pin for equilib Express your answers using three significant figures separated by a comma. 195] ΑΣΦ | 11 | voc | B₁, B,= Submit Part B Part B Fo Submit Request Answer Determine the magnitude of the force along the spring DF for equilibrium.…Derivation of the Dc motor differential equations Under typical operating conditions, the torque generated by a DC motor is directly proportional to the cumrent passing through it T-kai where kis a proportionality constant determined by the characteristics of the specific motor. This relationship fails for large values of i. When the armature ratates, z generates a back electromotive force (back EMF) that opposes the applied valtage. In the circuit diagram, this is represented by a mator symbol. The voltage drop dua to the back EMF, denoted e, is proportional to the rotational velocity af the armature e-kp where k, is a constant of proportionality. Ta derive the relationship between the current i and the motor shaftt angular position 0. yau can apply KirchhofT's voltage law and Nowton's second law in terms of torques acting on the motor shaft. Kirchhoff's voltage law implies that the sum at the vatage drops across the circuit must equal tha applied voltage: iR + (1) where v is the…8. A 4-µF capacitor, a 6-uF capacitor, and an 8-μF capacitor are in parallel across a 300-V source. Find (a) the total capacitance, (b) the magnitude of charge stored by each capacitor, and (c) the total stored energy.
- B-4-10. Consider the liquid-level control system shown in We assume that the velocity of the power piston (valve) dy dt Figure 4-52. The inlet valve is controlled by a hydraulic is proportional to pilot-valve displacement x. or integral controller. Assume that the steady-state inflow rate is and steady-state outflow rate is also, the steady-state head is , steady-state pilot valve displacement is X = 0, and steady-state valve position is Y. We assume that the set point R corresponds to the steady-state head H. The set point is fixed. Assume also that the disturbance inflow rate 94, which is a small quantity, is applied to the water tank at t = 0. This disturbance causes the head to change from H to H+h. This change results in a change in the outflow rate by qo. Through the hydraulic controller, the change in head causes a change in the inflow rate from Q to Q + q. (The integral controller tends to keep the head constant as much as possible in the presence of disturbances.) We assume…10. In a control system integral error compensation _the steady state error (а) (b) does not have any effect on increases minimizes ...... (c) (d) any of the aboveA 140-J of work is done on a gaseous refrigerant as it undergoes compression. What is the total amount of energy transferred by heat if there is an increase of 120 J in the internal energy of the system?
- Water is the working fluid in a reheat-regenerative Rankine cycle with one closed feedwater heater and one open feedwater heater. Steam enters the turbine at 1400 lbf/in.2 and 900°F and expands to 500 lbf/in.2, where some of the steam is extracted and diverted to the closed feedwater heater. Condensate exiting the closed feedwater heater as saturated liquid at 500 lbf/in.² undergoes a throttling process to 120 lbf/in.² as it passes through a trap into the open feedwater heater. The feedwater leaves the closed feedwater heater at 1400 lbf/in.2 and a temperature equal to the saturation temperature at 500 lbf/in.2 The remaining steam is reheated to 800°F before entering the second-stage turbine, where it expands to 120 lbf/in.2 Some of the steam is extracted and diverted to the open feedwater heater operating at 120 lbf/in.2 Saturated liquid exits the open feedwater heater at 120 lbf/in.² The remaining steam expands through the third-stage turbine to the condenser pressure of 2 lbf/in.2…When a tension force of 900 N is applied to a steel wire, it is assumed that E = 210 GPa and that the diameter of the wire increases by 1.05 mm. Calculate the diameter of the wire.Problem (1) For the circuit shown in fig. find the current supplied by the battery by using delta/star transformation 400 www 2002 500 30 V 2002 www 30Ω www 5Ω ww