MCQ

1. The force between two electrons separated by a distance r varies as (i) r2 (ii) r (iii) r-1 (iv) r-2 2. Two charges are placed at a certain distance apart. A brass sheet is placed between them. The force between them will (i) increase (ii) decrease (iii) remains unchanged (iv) none of the above […]

1. A kilowatt hour is the unit of (i) energy(ii) power(iii) electric charge(iv) electric current 2. Heat produced in a conductor depends (i) inversely on time(ii) directly on time(iii) both (i) and (ii)(iv) none of the above 3. If potential difference across a conductot of a material of resistivity ρ remains constant, then heat produced

1. The diameter of an atom is about (i) 10-10 m (ii) 10-8m (iii) 10-2 m (iv) 10-15 m 2. The number of compounds available in nature is (i) 105 (ii) 300 (iii) 1000 (iv) unlimited 3. The mass of a proton is …….. the mass of electron. (i) equal to (ii) less than (iii)

The demand for electrical energy is increasing day by day. So a boom in the consumption of electrical energy has been seen in the last few decades. It is the very reason for the growth in the field of electrical engineering. Due to this growth, carriers in this field are increasing day by day. Almost

1. A synchrotransmitter consists of a (a) salient pole rotor winding excited by an ac supply and a 3-phase balanced rotor winding. (b) three phase balanced stator winding excited by a three phase balanced ac signal and rotor connected to a dc voltage source. (c) salient pole, rotor winding excited by a dc signal. (d)

1. A recorder (a) is an indicating instrument which displays a time varying signal. (b) is a device whose function is to record the value of quantity as it is being measured. (c) records electrical and non-electrical quantities as a function of time or relates two signals to each other. (d) both (b) and (c).

1. A CRO screen has 10 divisions on the horizontal scale. If a voltage signal 5 sin (314 t + 45°) is examined with a line base setting of 5 ms/division, the number of cycles of signal displayed on the screen will be (a) 0.5 cycle (b) 2.5 cycles (c) 5 cycles. (d) 10 cycles.

1. Which bridge is used to determine frequency? (a) Anderson bridge. (b) De Sauty bridge. (c) Wien bridge. (d) Campbell bridge. 2. Which one of the following is a frequency sensitive bridge? (a) De-Sauty bridge. (b) Schering bridge. (c) Wien’s bridge. (d) Maxwell’s bridge. 3. Which of the following bridges can be used to construct

1. Which of the following indicating instrument, has/have linear scale ? Moving iron meter. PMMC meter. Thermocouple meter. Rectifier type meter. Select the correct answer using code given below : Code: (a) Only 1 and 2 (b) Only 2 and 3 (c) Only 3 and 4 (d) Only 2 2. Which of the following instruments

1. Commonly used standard capacitor is (a) concentric sphere type. (b) parallel plate type. (c) concentric cylinder type with guard ring. (d) multiple parallel plate type. 2. Which one of the following meters is an integrating type instrument? (a) Ammeter. (b) Voltmeter. (c) Wattmeter. (d) Energy meter. 3. The …….. is an integrating type instrument: