Physics A dynamo is a device which Creates electrical energy Creates mechanical energy Converts mechanical energy into electrical energy Converts electrical energy into mechanical energy Creates electrical energy Creates mechanical energy Converts mechanical energy into electrical energy Converts electrical energy into mechanical energy ANSWER DOWNLOAD EXAMIANS APP
Physics Unit of impedance is ________ Tesla Henry Ohm Hertz Tesla Henry Ohm Hertz ANSWER DOWNLOAD EXAMIANS APP
Physics What is the effective resistance (in Ω) of two resistors 20 Ω and 30 Ω connected in parallel? 36 50 12 24 36 50 12 24 ANSWER DOWNLOAD EXAMIANS APP
Physics The force of friction between two surfaces will increase if: Irregularities on both the surfaces are removed The two surfaces are pressed harder Air gap is created between the two surfaces A layer of lubricant is kept between the two surfaces Irregularities on both the surfaces are removed The two surfaces are pressed harder Air gap is created between the two surfaces A layer of lubricant is kept between the two surfaces ANSWER DOWNLOAD EXAMIANS APP
Physics A parallel-plate capacitor of capacitance C1 is made using two gold plates. Another parallel-plate capacitor of capacitance C2 is made using two aluminium plates with same plate separation, and all the four plates are of same area. If rg and ra are respectively the electrical resistivities of gold and aluminium, then which one of the following relations is correct? C1pa = C2pg C1>C2 C2>C1 C1 = C2 C1pa = C2pg C1>C2 C2>C1 C1 = C2 ANSWER DOWNLOAD EXAMIANS APP
Physics Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface ? Exosphere Mesosphere Stratosphere Ionosphere Exosphere Mesosphere Stratosphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
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