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 magnetic material hysteresis loss takes place primarily due to
(A) Rapid reversals of its magnetisation
(B) Flux density lagging behind magnetising force
(C) Molecular friction
(D) It high retentivity
Answer: Option D
02. In D.C. generators on no-load, the air gap flux distribution in space is
(A) Sinusoidal
(B) Triangular
(C) Pulsating
(D) Flat topped
Answer: Option D
03. Which of the following motors is non-self starting?
(A) D.C. series motor
(B) Synchronous motor
(C) Squirrel cage induction motor
(D) Wound round induction motor
Answer: Option B
04. Steam turbines are governed by the following methods
(A) Throttle governing
(B) Nozzle control governing
(C) By-pass governing
(D) All of the above
Answer: Option D
05. A feeder, in a transmission system, feeds power to
(A) Distributors
(B) Generating stations
(C) Service mains
(D) All of the above
Answer: Option A
06. The product of apparent power and cosine of the phase angle between circuit voltage and current is
(A) True power
(B) Reactive power
(C) Volt-amperes
(D) Instantaneous power
Answer: Option: A
07. A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is
(A) 1,403 Ω
(B) 4.7 kΩ
(C) 2 kΩ
(D) 3,403 Ω
Answer: Option B
08. The value of E within the field due to a point charge can be found with the help of
(A) Faraday's laws
(B) Kirchhoff s laws
(C) Coulomb's laws
(D) None of the above
Answer: Option C
09. Which is of the following data is required to draw the circle diagram for an induction motor?
(A) Block rotor test only
(B) No load test only
(C) Block rotor test and no-load test
(D) Block rotor test, no-load test and stator resistance test
Answer: Option D
10. The Norton equivalent current is
(A) The current through the load
(B) The open-current from the source
(C) The short circuit current
(D) None of the above
Answer: Option C
11. The induced voltage across a stationary conductor in a stationary magnetic field is
(A) Zero
(B) Reversed in polarity
(C) Increased
(D) Decreased
Answer: Option A
12. Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open
(A) There will be heavy current in the main line
(B) Rest of the two bulbs will not light
(C) All three bulbs will light
(D) The other two bulbs will light
Answer: Option D
13. An important advantage of a synchronous motor over wound round induction motor is that
(A) Its power factor may be varied at will
(B) Its speed is independent of supply frequency
(C) Its speed may be controlled more easily
(D) None of the above
Answer: Option A
14. The parallel combination of a 470 Ω resistor and a 1.5 kΩ resistor is in series with the parallel combination of five 1 kΩ resistors. The source voltage is 50 V. The percentage of the load current through any single 1 KΩ resistor is
(A) 25 %
(B) 20 %
(C) 100 %
(D) 50 %
Answer: Option B
15. Galvanized steel wire is generally used as
(A) Stay wire
(B) Earth wire
(C) Structural components
(D) All of the above
Answer: Option D
