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A fan at STP is at .87 “ WC delivers 20,800 cfm at 1700 RPM and draws 3.9 BHP. The fan is moved to an altitude of 9500 feet ASL. Find the CFM delivered at the same RPM. What is the SP and HP at the new altitude? What was the number of lbs/ hr delivered at SL versus at altitude? How much must the fan be sped up to deliver the same mass flow? What is the new SP and BHP at the increased speed?
Implement the following logic function using a Multiplexer having three select lines.
F(P,Q,R,S) = PQ̅R + QRS̅ + PQR̅
Implement:
i) Full-Adder
ii)Full-Subtractor
in a Active High output Decoder Circuit and 2-input NAND Gates.
in reciprocating compressor with crank slider mechanism the obliquity ratio is 3.75 with crank radius of 0.2m the crank rotating at 20 rad/s what is the acceleration of the piston when the velocity is zero
. The voltage across a 2-H inductance is shown in Figure P3.48. The initial current in the inductance is i(0) = 0. Sketch the current, power, and stored energy to scale versus time
Assume that you are supplied with a translational potentiometer sensor with the following properties;
* 100 V DC Power Supply,
* 1 resistive wire: 40 mm long with 1mm2 cross-section area. ( resistivity=0,00025 Ohm m)
It is also given to you that;
-In the initial state (where no force is applied to the system) of the potentiometer, movable arm of the output voltage positioner covers 90% (length) of the resistive wire.
- When 10N of force is applied to the system you observe 6mm displacement (in (-) y direction) of the movable arm of the output voltage positioner
Calculate what is the output voltage change caused by the 10N of force?
determine the value of the anode current and Rs when the device is on. vbr(f) =100v. assume vbe=0.7v and vce(sat) =0.1v for the internal transistor structure. what is the resistance in the forward conduction region of the 4-layer diode.
Answer the two questions below, in your opinion
1. Give one real-life example in Computers of Deadlock
2. How to prevent it from occurring?
5. NORMAL TENSION. A steel tape having a cross-sectional area of 0.06cm.sq and a modulus of elasticity of 2.0x10^6 kg/cm.sq, weighs 0.03kg/m. Its length is 30.00m when standardized at pull of 5kg and supported throughout its length. Determine the tension at which the effect of sag will be eliminated by the elongation of the tape due to increased tension.
4. COMBINED CORRECTION. A 50m steel tape is of standard length under a pull of 5.50kg and a temperature of 20°C when supported throughout its entire length. The tape weighs 0.05kg/m, has a cross-sectional area of 0.04 cm.sq and a modulus of elasticity of 2x10^6 kg/cm^2. This tape was used in the field to measure a distance that was determined to be 458.650. The constant pull applied was 8kg with the tape supported only at endpoints. During the measurement the temperature was observed to be at an average of 18°C. Use C 11.6 10 / 6
a. Determine the correction due to tension.
b. Determine the correction due to change in temperature.
c. Determine the correction due to sag.
d. Determine the correct length of the line.
