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. 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: Option A
02. The inductance of an iron-core coil decreases if
(A) The number of turns is decreased
(B) The iron core is removed
(C) The length of the coil decreases
(D) None of the above
Answer: Option A
03. Which of the following capacitor is preferred in case of single phase motor?
(A) Mica capacitor
(B) Paper capacitor
(C) Electrolytic capacitor
(D) Ceramic capacitor
Answer: Option C
04. A sine wave voltage is applied across a capacitor. When the frequency of the voltage is decreased, the current
(A) Increases
(B) Remains constant
(C) Decreases
(D) Ceases
Answer: Option C
05. Slip ring motor is preferred over squirrel cage induction motor where
(A) High starting torque is required
(B) Load torque is heavy
(C) Heavy pull out torque is required
(D) All of the above
Answer: Option A
06. Substances which have permeability less than the permeability of free space are known as
(A) Ferromagnetic
(B) Paramagnetic
(C) Diamagnetic
(D) Bipolar
Answer: Option C
07. The insulation between windings and grounded core and the insulation between the windings of the same phase is called
(A) Minor insulation
(B) Major insulation
(C) Either of the above
(D) None of the above
Answer: Option B
08. The conductive loop on the rotor of a simple two-pole, single-phase generator rotates at a rate of 400 rps. The frequency of the induced output voltage is
(A) 40 Hz
(B) 100 Hz
(C) 400 Hz
(D) Indeterminable
Answer: Option C
09. If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is
(A) A sinusoid of the same frequency
(B) A sinusoid of half the original frequency
(C) A sinusoid of double the frequency
(D) Not a sinusoid
Answer: Option: A
10. The transient currents are associated with the
(A) Changes in the stored energy in the inductors and capacitors
(B) Impedance of the circuit
(C) Applied voltage to the circuit
(D) Resistance of the circuit
Answer: Option: A
11. Temperature of the stator winding of a three phase induction motor is obtained by
(A) Resistance rise method
(B) Thermometer method
(C) Embedded temperature method
(D) All above methods
Answer: Option D
12. A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current
(A) Is increased
(B) Is decreased
(C) Does not change
(D) Momentarily goes to zero
Answer: Option A
13. Battery charging equipment is generally installed
(A) In well ventilated location
(B) In clean and dry place
(C) As near as practical to the battery being charged
(D) In location having all above features
Answer: Option D
14. The inductance of a coil can be increased by
(A) Increasing core length
(B) Decreasing the number of turns
(C) Decreasing the diameter of the former
(D) Choosing core material having high relative permeability
Answer: Option: D
15. In an open loop control system
(A) Output is independent of control input
(B) Output is dependent on control input
(C) Only system parameters have effect on the control output
(D) None of the above
Answer: Option A
