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. If a D.C. series motor is operated on A.C. supply, it will
(A) Spark excessively
(B) Have poor efficiency
(C) Have poor power factor
(D) All of the above
Answer: Option D
02. Load carrying capacity of belt conveyor is about
(A) 20 to 40 tonnes/hr
(B) 50 to 100 tonnes/hr
(C) 100 to 150 tonnes/hr
(D) 150 to 200 tonnes/hr
Answer: Option B
03. Which of the following coil will have large resonant frequency?
(A) A coil with large resistance
(B) A coil with low resistance
(C) A coil with large distributed capacitance
(D) A coil with low distributed capacitance
Answer: Option: C
04. The critical resistance of the D.C. generator is the resistance of
(A) Field
(B) Brushes
(C) Armature
(D) Load
Answer: Option A
05. In a ∆-connected generator, all of the phase voltages are
(A) Zero
(B) Equal in magnitude
(C) One-third of total
(D) One-sixth of total
Answer: Option B
06. The active material of the positive plates of silver-zinc batteries is
(A) Silver oxide
(B) Lead oxide
(C) Lead
(D) Zinc powder
Answer: Option A
07. If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be
(A) Zero
(B) Small
(C) Large
(D) None of the above
Answer: Option C
08. At the instant of starting when a D.C. motor is put on supply, it behaves like
(A) A highly resistive circuit
(B) A low resistance circuit
(C) A capacitive circuit
(D) None of the above
Answer: Option B
09. Which of the following motor will have relatively higher power factor?
(A) Capacitor run motor
(B) Shaded pole motor
(C) Capacitor start motor
(D) Split phase motor
Answer: Option A
10. Time constant of an inductive circuit
(A) Increases with increase of inductance and decrease of resistance
(B) Increases with the increase of inductance and the increase of resistance
(C) Increases with decrease of inductance and decrease of resistance
(D) Increases with decrease of inductance and increase of resistance
Answer: Option: A
11. In a series RC circuit, when the frequency and the resistance are halved, the impedance
(A) Doubles
(B) Is halved
(C) Is reduced to one-fourth
(D) Cannot be determined without values
Answer: Option D
12. Copper wire of certain length and resistance is drawn out to three times its length without change in volume, the new resistance of wire becomes
(A) 1/9 times
(B) 3 times
(C) 9 times
(D) Unchanged
Answer: Option C
13. Which of the following statements is incorrect?
(A) The leakage resistance of ceramic capacitors is generally high
(B) The stored energy in a capacitor decreases with reduction in value of capacitance
(C) The stored energy in a capacitor increases with applied voltage
(D) A wire cable has distributed capacitance between the conductors
Answer: Option B
14. Following D.C. generator will be in a position to build up without any residual magnetism in the poles
(A) Series generator
(B) Shunt generator
(C) Compound generator
(D) Self-excited generator
Answer: Option D
15. In a Y-connected circuit, between each line voltage and the nearest phase voltage, there is a phase angle of
(A) 0°
(B) 30°
(C) 60°
(D) 120°
Answer: Option B
