Q1/Choice the correct answer 1. The decimal number 10 is equivalent to the binery number: (a) 1000 (b) 1010 (c) 1100 (d) 1011. 2.In relation to a basic computer system the function of each the following components: (a) CPU (b) clock (c) RAM (d) ROM. 3.The output of an RS bistable is a logic 1.this means that the bistable is: (a)set (b)reset (c) in a high impedance state (d)RAT. 4. The brush fitted to a DC motor/generator shoud have: (a)low coefficient of friction and low contact resistance (b) high coefficient of friction and low contact resistance (c) low coefficient of friction and low contact content (d) high coefficient of friction and low contact content 5. Battery capacity is measured in: (a) volts (b) amperes (c) ampere-hours (d) none 6. A three-phase induction motor has three pairs of poles and is operated from a 60 Hz supply. Which one of the following gives the motor's synchronous speed? (a) 1200r.p.m (b) 1800r.p.m. (c) 3600r.p.m. (d)1500r.p.m. 7. In a star-connected three-phase system, the line voltage is found to be 200v. Which one of the following gives the approximate value of phase voltage? (a) 67 V (b) 115 V (c) 346 V. (d)400V.