ELECTRICAL ENGINEERING QUESTION AND ANSWERS PUBLISHED ON 23-06-2016

1. The design of mechanical parts is particularly important in case of _____ speed
machines.
(a) low
(b) high
(c) medium
(d) All the Above

Answer: (b) high

2. A practical formula for determining the thickness of insulation between low voltage
and high voltage windings is
(a) 5 + 0.9 kV mm
(6) 2 + 0.5 kVmm
(c) 4 + 0.7 kV mm
(d) 1 + 0.2 kVmm

Answer: (a) 5 + 0.9 kV mm

3. For making a capacitor, it is better to select a dielectric having
(a) low permittivity
(b) permittivity slightly more than that of air

(c) permittivity same as that of air
(d) high permittivity

Answer: (d) high permittivity

4. Which of the following statements is not necessarily correct for open control system ?
(a) Input command is the sole factor responsible for providing the control action
(b) Less expensive
(c) Presence of non-linearities causes malfunctioning
(d) Generally free from problems of non-linearities

Answer: (c) Presence of non-linearities causes malfunctioning

5. Which of the following are integrating instruments ?
(a) Ammeters
(b) Ampere-hour and watt-hour meters
(c) Wattmeters
(d) Voltmeters

Answer: (b) Ampere-hour and watt-hour meters