Q1 : Fill the blanks by the right answer for the following: 1- This element, constructed simply of two conducting surfaces separated by the air gap, is called (A) resistor ( B) inductor (С) сарасitor (D) Transformers 2- The relationship between the applied voltage, the charge on the plates, and the capacitance level is defined by the following equation: B = A Ho (A) (В) (C) (D) 3- For capacitors in parallel, the total capacitance is 1 1 1 C, C + C %3D CT (В) C, = C, + Cz + C, (D) C, C2 C3 (A) C= 0 (C) 4-The number of flux lines per unit area, called the flux density, is denoted by the capital letter Band is measured in (A) webers (Wb) (B) teslas (T) (C) (ampere-turns, At) (D) ampere 5- For delta-star transformation we use the eq. R R2 R,R R, = R, + R¸+ R, R1 R2 RR R, R+ R2 + R3 RT R (D) R A) В) C) R1 + R2 6-For the general case of a circuit having R, XL and Xc in series, the impedance will be A) Z = R+j(XL - Xc) C) Z = R+j(X1) B) Z = R - j(XL – Xc) C) Z = R+ j(Xc) 7- The types of power in AC circuits are: A) Active power P, Reactive power Q, Total power S B) Total power S C) Active power P, Reactive power Q D) Active power P
Q1 : Fill the blanks by the right answer for the following: 1- This element, constructed simply of two conducting surfaces separated by the air gap, is called (A) resistor ( B) inductor (С) сарасitor (D) Transformers 2- The relationship between the applied voltage, the charge on the plates, and the capacitance level is defined by the following equation: B = A Ho (A) (В) (C) (D) 3- For capacitors in parallel, the total capacitance is 1 1 1 C, C + C %3D CT (В) C, = C, + Cz + C, (D) C, C2 C3 (A) C= 0 (C) 4-The number of flux lines per unit area, called the flux density, is denoted by the capital letter Band is measured in (A) webers (Wb) (B) teslas (T) (C) (ampere-turns, At) (D) ampere 5- For delta-star transformation we use the eq. R R2 R,R R, = R, + R¸+ R, R1 R2 RR R, R+ R2 + R3 RT R (D) R A) В) C) R1 + R2 6-For the general case of a circuit having R, XL and Xc in series, the impedance will be A) Z = R+j(XL - Xc) C) Z = R+j(X1) B) Z = R - j(XL – Xc) C) Z = R+ j(Xc) 7- The types of power in AC circuits are: A) Active power P, Reactive power Q, Total power S B) Total power S C) Active power P, Reactive power Q D) Active power P
Chapter3: Magnetic Starters
Section: Chapter Questions
Problem 30SQ
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