Consider the two point BVP: -u" + 3u = 1, 0
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- 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||Investigate the complex potential function f(z) = U∞ z +m ln [(z + a)/(z-a)] and interpret the fl ow pattern.OBLEM 4. Using the condition (3.027) of Lect. 16, prove that the mo- mentum operator p is Hermitian. HINT: Use the periodic boundary conditions for the functions g(r) and s(x).
- a string is attached to a mechanical vibrator, which has a frequency of 30Hx. the sttring is 3.0m long and has a linear density of .4 g/cm. the tension is varied by adding weights to teh string passing over the pully. What tension is needed to cause the string to resonate with the vibrator in four segments. assume that he points where the string meets the vibrator and the pulley are approx nodes.1.4 Define nett P-F intervalAKN =11 BKN=5 CKN=4 D°=36 E°=50
- are these the correct equations for Q? Node 1:inflow Node 2=Qa+Qb+Qc+Qd Node 3= Qd+Qd2+Qk+Qj Node 4= Qd2+Qi+Qg+Ql Node 5= Ql+Qm+Qn+Qq Node 6:Qq+Qp+Qr+qs Node 7:Qb+Qe+Qj+Qh Node 8:Qc+Qk+Qg Node 9: Qf+Qf1+Qe Node 9a:inflow Node 10Qf1+Qi+Qh Node 11: inflow Node 12:Qo+Qm+Qp Node 13:outflowShow step by step x = 100 SN = 7The transfer function of the open system is given as: Show that when the phase angle of G(jw) is -180 degrees, the frequency is Wpc=28.3 rad/s. Find the magnitude of G(jWpc) at this frequency.