15. An ideal buck converter is operated in CCM mode. Input voltage is 20V, output voltage is 10V and load resistance is 2Ω. Choose a false statement.
(A) Average input current is 2.5A
(B) Average output current is 5A
(C) Average inductor voltage is 10V
(D) Average diode voltage is 10V

11. A Y-connected resistive load 20Ω per phase is connected to a balanced three-phase four-wire voltage source. Line voltage is 173V. A neutral line with resistance 10Ω is connected between source and load. Choose a false statement.(A) Load current is 5A(B) Line current is 8.65A(C) Neutral current is 0A(D) Total power is 1500W

12. For an ideal transformer, voltage at the primary side and the secondary side are 500V and 100V, respectively. Secondary side is connected to a 100Ω resistor. Choose a false statement.(A) output power is 100W(B) input power is 100W(C) output current is 1A(D) input current is 1A

13. Determine average dc output voltage of a half-wave rectifier applied by 100V RMS ac voltage.(A) 141.4V(B) 100V(C) 70.7V(D) 45V

14. Current is equal to 10+10 cos(377t)+10 cos(1131t) A. Determine its RMS value.(A) 28.28A(B) 20A(C) 14.14A(D)10A

16. An ideal boost converter is operated in CCM mode. Input voltage is 10V and output voltage is 50V and load resistance is 10Ω. Choose a false statement.(A) Average inductor current 5A(B) Duty ratio is 0.8(C) Input power is 250W(D) Output power is 250W

17. An ideal boost-boost converter is operated in CCM mode. Input voltage is 10V and output voltage is 20V and load resistance is 10Ω. Choose a false statement.(A) Duty ratio is 0.67(B) Average inductor current is 8A(C) Input current is 4A(D) Output current 2A

18. Determine the speed of rotation of a synchronous generator with parameters 480V/50Hz/six poles/delta-connection.(A) 600rpm(B) 1000rpm(C) 1200rpm(D) 2000rpm

19. A four-pole, 60Hz induction motor supplies 15kW to a load at 5% slip. Choose a false statement.(A) Synchronous speed is 1800 rpm(B) Rotor speed is 1710 rpm(C) Rotor frequency is 3Hz(D) Load torque is 41.7N·m

20. A single-phase transformer is rated at 220/440V, 10kVA. Leakage reactance measured from the low-voltage side is 0.24Ω. Choose a false statement.(A) Base impedance at the low-voltage side is 4.84Ω(B) Base impedance at the high-voltage side is 19.36Ω(C) Leakage reactance at the low-voltage side is 0.050 pu(D) Leakage reactance at the high-voltage side is 0.012 pu

1. Suppose we have a byte-addressable machine, i.e., each byte is accessed via an address. Let the locations for an array be allocated in a row-major manner, and each element of an array takes 4 bytes. Assume that the address of the first byte of the array is 500 in all the following cases. Which of the following is true?(A) The address of the element A10 in an array declared as A100 is 24586；(B) The address of the element A1030] in an array declared as A[100[300] is 177899；(C) The address of the element A[10] in an array declared as A[100] is 536；(D) The address of the element A1030 in an array declared as A100300 is 76457217.