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- The linear displacement is also a product of average velocity and time. Select one: True FalseVibrations Engineering: A rope of a pendulum has a length of 2 meters. What is the natural frequency of the system for small angles in hertz? (Express the final answer in 4 significant digits)The mass of a solid hemisphere is measured once with a digital balance whose resolution is 1 g. The result is m = 50 g. With a caliper, the resolution of which is 0.05 mm, repeated measurements of the diameter D of the hemisphere are carried out. The values obtained for D: 100.30 mm; 100.00 mm; 100.60 mm; 100.10 mm; 100.25 mm; 100.50 mm; 100.40 mm; 100.20 mm; 100.30 mm; 100.35 mm. The result of measuring the mass m is: (a) (50 ± 1) g (b) (50.0 ± 0.58) g (c) (50.00 ± 0.58) g (d) (50.0 ± 0.5) g
- High-frequency waves travel isothermally transforming speed of sound to a.) c=sqrt b.) c=vm c.) c = sqrt(kRT) d.) c = sqrt(k/p)The displacement of a machine is expressed as x(t) = A sin(6t + Φ), where x is in meters and t is in seconds. If the displacement and the velocity of the machine at t = 0 are known to be 0.05 m and 0.005 m/s, determine by how much the response of the system leads the reference wave.given:Q2A=12 INCHESAB= 2FT 4 INCHESBC= 8 INCHESDE = 1 FT 3 INCHESQ7E= 12 INCHESQ5C= 2 FTDF= 2 FTCE = 3FT Ks -> use appropriate scaleKv -> 400ft/min= 1 inchVa= 472 ft/ min ☆ Solve the velocities of F and E by Resolution and Composition☆ pls show the output
- i just need final answer A coaxial capacitive sensor is desired to measure the water level in a water tank. The coaxial sensor with a length of d=32 cm has an inner radius of a=9 mm and an outer radius of b=12 mm. Since the total capacitor value is measured at the sensor output 4.03 nF, the water level l =? Calculate (Note: It is known that the water temperature in the tank is 20 degrees. The variation graph of the relative dielectric constant with temperature is also given below.)a- 15cm b- 12cm c- 21cm d-18cm e- 26cmA differential equation encountered in the vibration of beams is d4ydx4=2D where x = distance measured along the beam; [x]=[L] y = displacement of the beam; [y]=[L] = circular frequency of vibration; []=[T1] = mass of the beam per unit length; []=[ML1] D = bending rigidity of beam; [D]=[FL2] Show that the equation is dimensionally homogeneous. Note that [F]=[MLT2] see Eq. (1.21:).1.4 Define nett P-F interval
- มอเตอร์เหนี่ยวนํา 3 เฟส 50-Hz ที่เชื่อมต่อดาวโรเตอร์ให้ 500 V (r.m.s.) หยุดนิ่งระหว่างวงแหวนสลิปบนวงจรเปิด คํานวณกระแสและตัวประกอบกําลังเมื่อหยุดนิ่งเมื่อขดลวดโรเตอร์เชื่อมต่อกับวงจรภายนอกที่เชื่อมต่อกับดาวซึ่งแต่ละเฟสมีความต้านทาน 10 Ωและการเหนี่ยวนํา 0.04 H ความต้านทานต่อเฟสของขดลวดโรเตอร์คือ 0.2 Ω และการเหนี่ยวนําคือ 0.04 H. นอกจากนี้ให้คํานวณตัวประกอบกระแสและกําลังเมื่อแหวนลื่นลัดวงจรและมอเตอร์ทํางานด้วยการลื่นไถล 5 เปอร์เซ็นต์ สมมติว่าฟลักซ์คงที่ [10.67 A; 0.376; 21.95 A; 0.303||Discussion: 1- Measuring the angle of phase shift for every state. set the AC voltage source 15V and using the data in the following table NO. Frequency | Capacitance | Resistance | Inductance 1 2KHZ 0.1uF 100Q 0.1mH 2 20 KHZ 0.1 yF 100 Q 0.1 mH 3 200 KHZ |0.1 pF 100 Q 0.1 mH 2- Draw the phase shift for every state as graph .The following applies to a second-order mechanical underdamped measurement system: a. It has instantaneous transient response. b. Settling time is an important parameter c. Effects of capacitance and inductance must be considered. d. Time constant τ is the only important characteristic of the response.