Electrical Drives MCQ

Test your knowledge with important Electrical Drives MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Electrical Drives MCQs at Bissoy

• Who is known as the Father of Indian Railways?
  ক

  Lord Ripon

  খ

  Lord Boult

  গ

  Lord Hero

  ঘ

  Lord Dalhousie
• Which one of the following is the correct relationship?
  ক

  F=μR

  খ

  F=2μR

  গ

  F=4μR

  ঘ

  F=5μR
• The value of area under a velocity-time graph is _________
  ক

  Force

  খ

  Momentum

  গ

  Displacement

  ঘ

  Acceleration
• Which of the following is the most severe type of fault?
  ক

  LLG

  খ

  LLL

  গ

  LLLG

  ঘ

  LL
• Which of the following type of grounding is used to suppress the capacitive effect?
  ক

  Reactance grounding

  খ

  Peterson coil

  গ

  Solid grounding

  ঘ

  Resistance grounding
• When was the first train built?
  ক

  1804

  খ

  1845

  গ

  1834

  ঘ

  1824
• Current Chopping is most severe in which of the following?
  ক

  Vacuum Circuit Breaker

  খ

  Air Blast Circuit Breaker

  গ

  Oil Circuit Breaker

  ঘ

  Air Break Circuit Breaker
• Load interrupter operated at ________
  ক

  Half of the full load

  খ

  One-fourth of the full load

  গ

  Full load

  ঘ

  No-load
• Calculate the active power in an 8.12 F capacitor.
  ক

  342 W

  খ

  452 W

  গ

  0 W

  ঘ

  77 W
• Calculate the active power in a 543 F capacitor.
  ক

  674 W

  খ

  56 W

  গ

  0 W

  ঘ

  364 W
• Which of the relationship is correct in Permanent magnet DC motor?
  ক

  T ∝ Ia 0 d) T ∝ (I]2 View Answer]

  খ

  T2 ∝ Ia

  গ

  T ∝ (Ia)0

  ঘ

  T ∝ (Ia)2
• Which one of the element is used to make R load commutating?
  ক

  Coil

  খ

  Resistor

  গ

  Capacitor

  ঘ

  Inductor
• Which one of the following device is uncontrolled?
  ক

  MOSFET

  খ

  Diode

  গ

  TRIAC

  ঘ

  SCR
• Which one of the following load is suitable for leading power factor load in Single phase Half-bridge inverter?
  ক

  R-L-C underdamped

  খ

  C load

  গ

  L-C load

  ঘ

  R-L-C overdamped
• Calculate the output frequency for the six-pulse converter if the supply frequency is 10 Hz.
  ক

  40 Hz

  খ

  50 Hz

  গ

  60 Hz

  ঘ

  70 Hz
• Which of the following is used to protect SCR from thermal conditions?
  ক

  Voltage clamping device

  খ

  Snubber circuit

  গ

  Heat sink

  ঘ

  Zener diode
• Which of the following motor is used in recording instruments?
  ক

  DC motor

  খ

  Synchronous motor

  গ

  Induction motor

  ঘ

  Reluctance motor
• Which of the following test is used to determine the conditions where electric motors are being used?
  ক

  Seismography

  খ

  Anthropology

  গ

  Thermography

  ঘ

  Geography
• Which of the following type of motor is used for milling and grinding operations?
  ক

  Split phase

  খ

  SCIM

  গ

  Reluctance motor

  ঘ

  WRIM
• Which of the following are the types of Stress?
  ক

  Longitudinal stress, Shear stress

  খ

  Longitudinal stress, Volume stress, Tangential stress

  গ

  Longitudinal stress, Volume stress

  ঘ

  Longitudinal stress, Lateral stress, Tangential stress
• Which of the following motor is a 1-Φ AC motor?
  ক

  Shunt motor

  খ

  Capacitor run

  গ

  Series motor

  ঘ

  Synchronous motor
• Which motor is preferred for Jaw crushers?
  ক

  SCIM

  খ

  Belt slip ring IM

  গ

  DC shunt motor

  ঘ

  WRIM
• Which of the following are the classes of insulating material in electrical machines?
  ক

  Γ, E, B, F, H, C

  খ

  Γ, A, E, F, H, C

  গ

  Γ, A, E, F, C

  ঘ

  A, E, B, F, H, C
• Which starting method is the best method in Induction motor?
  ক

  Reactance starting

  খ

  Direct online starting

  গ

  Star-Delta starting

  ঘ

  Autotransformer starting
• DC shunt motors are used where the high _________ is required.
  ক

  Breakdown torque

  খ

  Starting torque

  গ

  Maximum torque

  ঘ

  Minimum torque
• Which of the following is the correct abbreviation of NENO?
  ক

  Neither even nor original

  খ

  Neither even nor odd

  গ

  Neither even nor orthogonal

  ঘ

  Neither energy nor odd
• When 30 A current flows into the positive terminal of current source 8 V. Calculate the power delivered by the source.
  ক

  -240 W

  খ

  356 W

  গ

  -234 W

  ঘ

  243 W
• Which of the following is the correct abbreviation of IFOC?
  ক

  Insight field oriented control

  খ

  Indirect field oriented control

  গ

  Inverter field oriented control

  ঘ

  Isolated field oriented control
• Which braking method is the best method for obtaining high braking torque?
  ক

  Plugging

  খ

  Regenerative braking

  গ

  Rheostatic braking

  ঘ

  Dynamic braking
• Which of the following is the correct abbreviation of SCIM?
  ক

  Solid cage induction motor

  খ

  Square cage induction motor

  গ

  Squirrel cage inverter motor

  ঘ

  Squirrel cage induction motor