WBUT 2012 Basic Electrical and Electronic Engineering-II [ES-201] Question Paper

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CODE : ES 201 (Pt-I-EE)

CS/B.TECH (NEW)/SEM-2/ES-201 (Pt-I-EE)/2012

2012

BASIC ELECTRICAL &
ELECTRONIC ENGINEERING-II
(EE PART)

Full Marks : 35

The figures in the margin indicate full marks.

Candidates are required to give their answers in their own words

as far as practicable.

GROUP – A

(Multiple Choice Type Question)

1.       Choose the correct alternatives for any five of the following:
                                                                                                   5 x 1 = 5

          i)        In a three phase balanced system, line voltage makes an                  angle with phase voltages

                   a)       30° Image removed.                                 b)       60° Image removed.

                   c)       90° Image removed.                                 d)       120° Image removed.

          ii)       The speed in which stator magnetic field rotates is called

                   a)       actual speed

                   b)       synchronous speed

                   c)       slip speed

                   d)       super-synchronous speed.

          iii)      If a d.c. series motor is started at no load, the speed will be

                   a)       rated speed

                   b)       zero

                   c)       very high

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