ELECTRICAL ENGINEERING QUESTIONS PUBLISHED ON 03/09/2016

1. In ________ machines, the size of the shaft is decided by the critical speed which depends
on the deflection of the shaft.
(a) small
(b) medium
(c) large
(d) any of the above.
Answer: (c) large

2. Materials exhibiting zero value of resistivity are known as ______ .
(a) conductors__
(b) superconductors
(c) insulators
(d) semiconductors
Answer: (b) superconductors

3. A control system in which the control action is somehow dependent on the output is
known as
(a) Open system
(b) Semiclosed loop system
(c) Closed loop system
(d) None of the above
Answer: (c) Closed loop system

4. Which of the following methods does not take into account the maximum temperature

rise under variable load conditions ?
(a) Method of average losses
(b) Equivalent current method

(c) Equivalent power method
(d) Equivalent torque method
Answer: (a) Method of average losses

5. _____________ are always double layer type.
(a) Either of the above
(b) Open windings
(c) Closed windings
(d) None of the above
Answer: (c) Closed windings