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You Are On Multi Choice Question Bank SET 3399
169951. C house the missing letters : ah Ik a_cbca_bc.
(A): cata (B): ebaa (C): bcaa (D): abbe
169952. If 12x 13 = 6; 15x22-20 then 16x23=?
(A): IS (B): 24 (C): 39 (D): 36
169953. Find the next term :10(100, 102, 105, 110, 117,_2_
(A): 126 (B): 130 (C): 127 (D): 135
169954. If DFI IIT is coded as 73541 and 'CALCUTTA' is coded as 82589662 then how can 'CALICUT1 be coded ?
(A): 3279-131 (B): 5978213 (C): 82518 (D): 8543691
169955. Bear : Cub :: I lorsc :?
(A): Kid (B): Cuh (C): Call (D): Tony
169956. IfPIrr R=+ T~ -; V = x then 12V4K16P8T6?
(A): 138 (B): 50 (C): 28 (D): 44
169957. It 2016 January' 7 is Friday then what day is on 2016 May 1 ?
(A): Monday (B): Tuesday (C): Sunday (D): Friday
169958. A is the Son of B;C is the Son of D; A is married to F; F is l Vs Daughter. 1 low is C related to A ?
(A): Brother (B): Father-in-law (C): Unde (D): Brother-in-law
169959. In a slip ring induction motor slip rings are connected to the :
(A): Rotor (B): Stator (C): Exciting field (D): Centrifugal switch
169960. The stator winding of a 3φ slip ring'induction motor has 4 poles, How many number of poles in the rotor winding?
(A): 2 (B): 4 (C): 6 (D): 8
169961. What is the effect of single phasing in 3 φ induction motor while running?
(A): The motor will not run (B): Burn out due to overheating (C): No change in running (D): Will make humming noise
169962. The power factor of a purely resistive circuit is :
(A): Leading (B): Zero (C): Unity (D): Lagging
169963. An alternating current or voltage is that which :
(A): Changes direction only (B): Changes magnitude only (C): Changes both magnitude and direction (D): None of the above
169964. Primary winding of a transformer :
(A): Is always a high voltage winding (B): Is always a low voltage winding (C): Could either low voltage or high voltage (D): None of these
169965. Megger is used to measure :
(A): Earth resistance (B): Insulation resistance (C): Break down voltage of installation (D): None of these
169966. Moving iron type instruments are used on :
(A): AC supply only (B): DC supply only (C): Both AC and DC (D): None of these
169967. Normally the moving iron instruments are provided with :
(A): Eddy current damping (B): Air friction damping (C): Fluid friction damping (D): None of these
169968. The gas inside the inner discharge tube of a sodium vapour lamp is :
(A): Argon (B): Neon (C): Helium (D): Hydrogen
169969. Alternators are usually designed to generate :
(A): Variable frequencies (B): Definite frequency (C): Definite current (D): Definite power
169970. When the speed of the alternator increases thefrequency:
(A): Increases (B): Decreases (C): Remains constant (D): Changes
169971. In AC circuit the ratio of KW/ KVA represents
(A): Form factor (B): Power factor (C): Load factor (D): None of these
169972. The reactance of a 2H choke coil at 100 Hz is :
(A): 100 Ω (B): 216 Ω (C): 718 Ω (D): 1256 Ω
169973. The path of the magnetic flux in a transformer has :
(A): Low resistance (B): High resistance (C): Low reluctance (D): High conductivity
169974. The instrument used for measuring a resistance of 100M Ω is :
(A): Ohm meter (B): Megger (C): Multimeter (D): VTVM
169975. What is the recommended maximum pre heating temperature allowed in winding?
(A): 60°C (B): 75°C (C): 90°C (D): 100°C
169976. The frequency generated by a 8 pole alternator rotating at 600 rpm will be :
(A): 20 Hz (B): 40 Hz (C): 60 Hz (D): 80 Hz
169977. As compared to an amplifier,- a transformer cannot :
(A): increase output power (B): increase output voltage (C): increase output current (D): none of three
169978. Which of the following is known as metal rectifier :
(A): Gas tube diode (B): Silicon diode (C): Copper oxide diode (D): All of the above
169979. A single machine which can generate AC or DC as well as AC and DC both is called :
(A): MG set (B): Synchronous motor (C): Inverter (D): Rotary converter
169980. The commercial unit of Electrical energy is :
(A): Joule (B): Kilo watt hour (C): Watt- hour (D): Ampere hour
169981. How many number of positive and negative plates are placed in a 9 plate lead acid cell?
(A): 4 positive plate and 4 negative plate (B): 5 positive plate and 4 negative plate (C): 5 positive plate and 5 negative plate (D): 4 positive plate and 5 negative plate
169982. The unit of resistivity is :
(A): Ω (B): Ω/m (C): Ω m (D): mho
169983. The resistance of a perfect insulator is :
(A): Zero (B): 1Ω (C): 20 MΩ (D): Infinity
169984. Unit of flux density :
(A): Weber (B): Tesla (C): AT/m (D): H/m
169985. The basic principle of electromagnetic induction is :
(A): Fleming’s left hand rule (B): Steinmetz law (C): Ohm’s law (D): Faraday’s law
169986. Electrolyte used in nickel iron cell is :
(A): Dil.HCl (B): Dil.H2SO4 (C): NAOH (D): KOH
169987. A semiconductor in it’s purest form is known as :
(A): Super conductor (B): Extrinsic conductor (C): Insulator (D): Intrinsic conductor
169988. For a silicon PN junction the barrier potential is about:
(A): 0.7V (B): 0.001V (C): 0.07V (D): 1.7V
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