Today, all competitive exams are Multiple Choice Questions(MCQ) based examination system and the main factor is to answer each question in a prescribed time. So, practice as much as possible before the original test you are going to face.
Total number of Multiple Choice Question (MCQ) is 15 and time allotted for each question is 30 seconds. After the allotted time, the question will be marked as un-attempt.
QUIZ
Test Conducted by: ObjectiveBooks.com
Next Mock Tests:
01. Pure inductive circuit
(A) Consumes some power on average
(B) Does not take power at all from a line
(C) Takes power from the line during some part of the cycle and then returns back to it during other part of the cycle
(D) None of the above
Answer: Option: C
02. The distributors for residential areas are
(A) Single phase
(B) Three-phase three wire
(C) Three-phase four wire
(D) None of the above
Answer: Option C
03. The following coils are in parallel: 75 μH, 40 μH, 25 μH, and 15 μH. The total inductance is approximately
(A) 6.9 μH
(B) 14 μH
(C) 2.2 μH
(D) 155 μH
Answer: Option A
04. Which of the following is exhibited by Root locus diagrams?
(A) The poles of the transfer function for a set of parameter values
(B) The bandwidth of the system
(C) The response of a system to a step input
(D) The frequency response of a system
Answer: Option A
05. A series circuit consists of three resistors with values of 120 Ω, 270 Ω, and 330 Ω. The total resistance is
(A) Less than 120 Ω
(B) The average of the values
(C) 720 Ω
(D) 120 Ω
Answer: Option C
06. Slip ring motor is recommended where
(A) Speed control is required
(B) Frequent starting, stopping and reversing is required
(C) High starting torque is needed
(D) All above features are required
Answer: Option D
07. In a synchronous motor, damper windings are provided on
(A) Stator frame
(B) Rotor shaft
(C) Pole faces
(D) None of the above
Answer: Option C
08. Magnetism of a magnet can be destroyed by
(A) Heating
(B) Hammering
(C) By inductive action of another magnet
(D) By all above methods
Answer: Option D
09. In jet type condensers
(A) Cooling water passes through tubes and steam surrounds them
(B) Steam passes through tubes and cooling water surrounds them
(C) Steam and cooling water mix
(D) Steam and cooling water do not mix
Answer: Option C
10. When electric current passes through a bucket full of water, lot of bubbling is observed. This suggests that the type of supply is
(A) A.C.
(B) D.C.
(C) Any of above two
(D) None of the above
Answer: Option B
11. On which of the following factors skin effect depends?
(A) Frequency of the current
(B) Size of the conductor
(C) Resistivity of the conductor material
(D) All of the above
Answer: Option D
12. Extent of corrosion in the underground metal work depends upon
(A) Amount of moisture
(B) Type of metals
(C) Type of soil chemicals
(D) All above factors
Answer: Option D
13. If two currents are in the same direction at any instant of time in a given branch of a circuit, the net current at that instant
(A) Is zero
(B) Is the sum of the two currents
(C) Is the difference between the two currents
(D) Cannot be determined
Answer: Option B
14. Four equal-value resistors are in series with a 12 V battery and 13.63 mA are measured. The value of each resistor is
(A) 22 Ω
(B) 220 Ω
(C) 880 Ω
(D) 88 Ω
Answer: Option B
15. Aluminium when adopted as a conductor material in ________ transformers, decreases the overall cost of the transformer
(A) Small size
(B) Medium size
(C) Large size
(D) Any of the above size
Answer: Option A
