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. In a A.C. series motor armature coils are usually connected to commutator
(A) Through resistance
(B) Through reactance
(C) Through capacitors
(D) Solidly
Answer: Option A
02. In electronic systems, repetitive-pulse waveforms are encountered
(A) More often than single pulses
(B) Less often than single pulses
(C) About as often as single pulses
(D) Twice as often as single pulses
Answer: Option A
03. By which of the following methods the temperature rise of windings and other parts may be determined?
(A) Thermometer method
(B) Resistance method
(C) Embedded temperature detector method
(D) Any of the above
Answer: Option D
04. In the complex plane, the number 4 + j3 is located in the
(A) First quadrant
(B) Second quadrant
(C) Third quadrant
(D) Fourth quadrant
Answer: Option A
05. Which of the following capacitors will have the least value of breakdown voltage?
(A) Mica
(B) Paper
(C) Ceramic
(D) Electrolytic
Answer: Option D
06. A nonlinear network does not satisfy
(A) Superposition condition
(B) Homogeneity condition
(C) Both homogeneity as well as superposition condition
(D) Homogeneity, superposition and associative condition
Answer: Option C
07. Which D.C. motor is preferred for elevators?
(A) Shunt motor
(B) Series motor
(C) Differential compound motor
(D) Cumulative compound motor
Answer: Option D
08. If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is
(A) Not necessarily stable
(B) Stable
(C) Unstable
(D) Always unstable
Answer: Option A
09. During load shedding
(A) System power factor is changed
(B) Some loads are switched off
(C) System voltage is reduced
(D) System frequency is reduced Efficiency is the secondary consideration in
Answer: Option B
10. If cathode and anode connections in a mercury arc rectifier are inter changed
(A) The rectifier will not operate
(B) Internal losses will be reduced
(C) Both ion and electron streams will move in the same direction
(D) The rectifier will operate at reduced efficiency
Answer: Option A
11. A coil of wire is placed in a changing magnetic field. If the number of turns in the coil is decreased, the voltage induced across the coil will
(A) Increase
(B) Decrease
(C) Remain constant
(D) Be excessive
Answer: Option B
12. In repulsion motor, zero torque is developed when
(A) Brush axis is 45° electrical to field axis
(B) Brush axis coincides with the field axis
(C) Brush axis is 90° electrical to field axis
(D) Both (B) and (C)
Answer: Option D
13. When a 15 V input pulse with a width equal to two time constants is applied to an RC integrator, the capacitor charges to
(A) 15 V
(B) 12.9 V
(C) 8.6 V
(D) 19.45 V
Answer: Option B
14. The ratio of starting torque to full-load torque is least in case of
(A) Series motors
(B) Shunt motors
(C) Compound motors
(D) None of the above
Answer: Option B
15. For which of the following power plants highly skilled engineers are required for running the plants?
(A) Nuclear power plants
(B) Gas turbine power plants
(C) Solar power plants
(D) Hydroelectric power plants
Answer: Option A
