ELECTRICAL ENGINEERING EXAM QUESTION AND ANSWERS- 2016-17

Question #1. In D.C. machines, ir order to prevent excessive distortion of field form by the armature
reaction, the field mmf must be made
(a) equal to that of armature mmf
(b) less in comparison with the arma¬ture mmf
(c) large in comparison with the arma-ture mmf
(d) none of the above
Answer: (c) large in comparison with the arma-ture mmf

Question #2. For measurements on high voltage capacitors, the suitable bridge is
(a) Wein bridge
(b) Modified De Santy's bridge
(c) Schering bridge
(d) Any of the above
(e) None of the above
Answer: (c) Schering bridge
Question #3. A signal other than the reference input that tends to affect the value of controlled
variable is known as
(a) disturbance
(b) command
(c) control element
(d) reference input
Answer: (a) disturbance

Question #4. By which of the following methods the temperature rise of windings and other parts
may be determined ?
(a) Thermometer method
(6) Resistance method

ELECTRICAL ENGINEERING QUESTION AND ANSWERS -SEPT 2016

Question # 1. signal will become zero when the feedback signal and reference signs are equal.
(a) Input
(b) Actuating
(c) Feedback
(d) Reference
Answer: (b) Actuating
Question # 2. The distance between the starts of two consecutive coils measured in terms of coil
sides is called
(a) front pitch
(b) winding pitch
(c) commutator pitch
(d) back pitch
Answer: (b) winding pitch

Question # 3. In a D.C. machine the number of brush arms is _____ the number of poles.
(a) less than
(b) greater than
(c) equal to
(d) none of the above
Answer: (c) equal to

Question # 4. The phase lag produced by transportation relays
(a) increases linearly with frequency
(b) is inverseh'proportional to frequency
(c) is independent of frequency
(d) decreases linearly with frequency
Answer: (a) increases linearly with frequency

Question # 5. _____ instruments are those which measure the total quantity of electricity delivered in a
particular time.
(a) Absolute
(b) Indicating

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

ELECTRICAL ENGINEER GK QUESTIONS

Question 1:-Identify the hardest tool material
 A:-Steel
 B:-Ceramics
 C:-Tungston carbide
 D:-Diamond
 Correct Answer:- Option-D

Question 2:-The essential constituent of any hardened steel is
 A:-Austenite
 B:-Cementite
 C:-Martensite
 D:-Pearlite
 Correct Answer:- Option-C
Question 3:-The collapsible tooth paste tube are made by
 A:-Drawing
 B:-Deep drawing
 C:-Rolling
 D:-Extrusion
 Correct Answer:- Option-D
Question 4:-The vertical passage for bringing molten metal to mould cavity is called
 A:-Sprue
 B:-Riser
 C:-Gate
 D:-Chaplet

ELECTRICAL ENGINEERING QUESTION ANSWERS PUBLISHED ON 12-07-2016

1. Which of the following instruments indicate the instantaneous value of the electrical quantity
being measured at the time at which it is being measured ?
(a) Absolute instruments
(b) Recording instruments
(c) Indicating instruments
(d) Integrating instruments

Answer: (c) Indicating instruments

2. In closed loop control system, with positive value of feedback gain the overall gain of
the system will
(a) decrease
(b) increase
(c) be unaffected
(d) any of the above

Answer: (a) decrease

3. For large power transformers, self oil cooled type or air blast type which of the
following values of current density may be used ?
(a) 1.0 to 1.2 A/mm2
(b) 1.5 to 2.0 A/mm2

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

ELECTRICAL ENGINEERING QUESTIONS PUBLISHED ON 17/06/2016

3531. The direction of electric field due +0 positive charge is .
(a) towards the charge
(b) away from the charge
(c) both (a) and (6)
(d) none of the above

Correct Answer: (b) away from the charge

3532. For open control system which of the following statements is incorrect ?
(a) Less expensive
(b) Construction is simple and maintenance easy
(c) Recalibration is not required for maintaining the required quality of the output
(d) Errors are caused by disturbances

Correct Answer: (c) Recalibration is not required for maintaining the required quality of the output

3533. Electrical machines having power outputs ranging from a few kW upto approximately
250 kW may be classified as
(a) medium size machines
(b) small size machines
(c) large size machines