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You Are On Multi Choice Question Bank SET 3125
156251. The color of middle wire of 3 wire DC circuit is :
(A): red (B): black (C): blue (D): green
156252. The amp-hour efficiency of lead acid cell :
(A): 0.75 (B): 90 - 95% (C): 80 - 85% (D): 60-60%
156253. High rate discharge tester consists of:
(A): low range ammeter (B): high range voltmeter (C): low range voltmeter (D): high range ammeter
156254. The color of fresh Silica gell is :
(A): Blue (B): Red (C): Black (D): Light pink color
156255. Imaginary line joining the two poles of a magnet:
(A): magnetic equator (B): magnetic pole (C): magnetic lines (D): magnetic field
156256. Rotor copper loss of a three phase induction motor is :
(A): Fractional slip x input power to the rotor (B): Fractional slip x output of the rotor (C): Input power x output power (D): All the above
156257. 1 Metric horse power is :
(A): 742 W (B): 735 W (C): 735.6 W (D): 746 W
156258. The back emf set up in the stator of a synchronous motor will depend on :
(A): rotor speed only (B): stator speed only (C): rotor emf (D): rotor excitation
156259. The armature Wdg of repulsion motor is excited :
(A): resistivelv (B): inductively (C): conductively (D): capacitively
156260. The mam disadvantage of shaded pole motor :
(A): low-starting torque (B): little over load capacity (C): low efficiency (D): all the above
156261. The armature flux opposes the main flux is in synchronous machine when the PF is :
(A): unit’ (B): zero lagging (C): zero leading (D): 0.8 lagging
156262. Dielec tric strength of a medium is :
(A): Joules/m2 (B): Coulomb/m2 (C): kV/mm (D): Volt/m2
156263. Electric intensity is expressed as :
(A): webber (B): Volt/m (C): emf (D): coulomb
156264. Potential inside the hollow charged sphere :
(A): less than itssurface (B): greater than onits surface (C): same as on its surface (D): zero
156265. Capacitance in any circuit is opposition to :
(A): voltage (B): current flow (C): any changein current (D): any change inpower
156266. The simple measuring instrument used to transfer measurement from the steel rule to object :
(A): try-square (B): calliper (C): scriber (D): punch
156267. 2 ohm resistance having current of 2 A will dissipate the power of :
(A): 8 W (B): 8j (C): 2 W (D): 4W
156268. If the diameter of a wire is doubled keeping the length constant the resistance :
(A): becomes one fourth (B): become twice (C): remains same (D): becomes 4 times
156269. Which of the following is linear and bilateral element ?
(A): Semiconductor (B): resistor (C): electron tube (D): transistor
156270. Sedimentation occurs in lead acid cell
(A): over charging at high rate (B): over charging at slow rating (C): no use for longer period (D): slow charged rate
156271. Kirchhoff's law are valid for :
(A): linear circuit (B): non-linear circuit (C): both linear and non-linear circuit (D): passive circuit
156272. The algebraic sum of all IR drops and emf in any closed loop of a network as per KVL is :
(A): #NAME? (B): zero (C): #NAME? (D): #NAME?
156273. Form factor is the ratio of :
(A): average value/rms value (B): average value x rms value (C): instantaneous value/rms value (D): rms value/average value
156274. The power factor of the inductive load is :
(A): leading (B): lagging (C): unity (D): zero
156275. A choke coil has :
(A): high inductive, high resistance (B): low inductive, low resistance (C): low inductive, high resistance (D): high inductive, low resistance
156276. A choke is used for limiting current in :
(A): AC ckt only (B): DC ckt only (C): both AC and DC (D): either AC or DC
156277. Power factor is defined as :
(A): kVA/kVAR (B): kVA/kW (C): kW/kVA (D): kW/kVR
156278. 2 Wattmeter method measuring power, 2 meters read equal and opposite reading the load power factor :
(A): zero (B): 0.5 (C): unity (D): above0.5
156279. The secondary current of 400 kVA, 11kV/433V, 3 phase transformer is about :
(A): 420 A (B): 533A (C): 666.5A (D): 840 A
156280. The current rating of 400 mm2 AYFY cable is :
(A): 400 A (B): 435 A (C): 305 A (D): 335 A
156281. The maximum efficiency of distribution transformer is :
(A): I/4th load (B): full load (C): 3/4th load (D): half load
156282. The most efficient lamp :
(A): graphene (B): LED (C): CFL (D): sodium vapour lamp
156283. The larger transformer stepped core arrangement is used to minimize the use of :
(A): core (B): copper (C): hysteresis loss (D): core loss
156284. Examine the Commutator and brushes :
(A): weekly maintenance (B): monthly maintenance (C): daily maintenance (D): yearly maintenance
156285. In DC generator the voltage drop of copper-carbon brush is about:
(A): 1.6 V (B): 2 V (C): 1.75 V (D): 0.3 V
156286. Alternator voltage regulation is determined by emf method. It is due to :
(A): Rothert (B): Behn-Eschenberg (C): Faraday (D): Pointer
156287. The starting torque of capacitor start, capacitor run is about:
(A): 200% of FL torque (B): 50% of FL torque (C): 300% of FL torque (D): 100% of FL torque
156288. The first Director General of Archaeological Survey of India :
(A): Mountbatten (B): Alexander Cunningham (C): Wheeler (D): Ernest Mackey
156289. Name the first Indian to win the World Amateur Billiards Title.
(A): Wilson jones (B): Kamaljit Sandhu (C): Ravi Shastri (D): K. Malleswari
156290. In which place the Great Victoria Desert is located ?
(A): Canada (B): Africa (C): Asia (D): Australia
156291. Name the Keralaruler whogave hiscountry to Sri Padmanabha as Tripadidana.
(A): Saktan Tampuran (B): Swati Tirunal (C): Marthanda Varma (D): Rama Yarma
156292. Who was known as Frontier Gandhi ?
(A): Abdul Kalam Azad (B): Muhammed Iqbal (C): Khan Abdul Ghafar Khan (D): Patel
156293. In which year MountbattenPlan wasannouncedin India ?
(A): 1947 (B): 1946 (C): 1945 (D): 1948
156294. Director of the film 'Tamas' explaining about partition of India :
(A): Satyajit Rai (B): Govind Nihalani (C): Mrinali Sen (D): Narain Bharati
156295. In which year Sadhujanaparipalanayogam established ?
(A): 1903 (B): 1905 (C): 1907 (D): 1910
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