Q.14 Which type of method is used only to measure the power of a single-phase system?Ans A. Polyphase wattmeterB. Three wattmeter methodC. Two wattmeter methodD. One wattmeter methodCorrect Ans Provided: D
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Q.8Ans A. 591B. 498C. 590D. 499Correct Ans Provided: C
Q.60 Which type of device is used to minimise the oscillation of indication measuring device?Ans A. Deflecting deviceB. Damping deviceC. Weighting deviceD. Controlling deviceCorrect Ans Provided: B
Q.64 A 110 V DC machine has an armature resistance of 2 ohm. If the full load current is 15 A, the difference in induced voltage when the machine is running as a motor, and as a generator ...
Q.72 A generating station, the maximum demand is 50000 kw and the annual load factor is 40% then what is unit generated per annum?Ans A. 14.92 × 107 kWhB. 11.88 × 106 kWhC. 17.52 × 107 kWhD. 16.21 ...
Q.57 A negative feedback closed loop control system has input of 10 V, forward gain of 1 and feedback gain of 3. Find the output voltage.Ans A. 10.0 VB. 7.5 VC. 2.5 VD. 5.0 VCorrect Ans Provided: C
Q.77 Which of the following is an INCORRECT type of wattmeter?Ans A. ElectrostaticB. InductionC. DynamometerD. Motor meterCorrect Ans Provided: D
Q.2 एक खिलौने की कीमत में पहले 28% की वृद्धि होती है और फिर 20% की वृद्धि होती है। उसके बाद, कीमत में 45% की कमी होती है। यदि इसकी अंतिम कीमत ₹422.40 है, तो इसकी मूल कीमत ...
Q.17 Which type of instrument is used in moving coil as the controlling and damping device?Ans A. ElectrostaticB. Moving ironC. ThermocoupleD. Electro-dynamicCorrect Ans Provided: C
Q.1 The current drawn by a 220V DC motor of armature resistance 1.5 ohms and back EMF 190 V is:Ans A. 200 AB. 20 AC. 22 AD. 220 ACorrect Ans Provided: B
