What are electocardiagrams?

What is the abbreviation for megahertz? What effect of an electric current does a relay and transformer use? What is armature current? What is the purpose of a blocking capacitor? Is neutral connection screw silver or gold? What is the emitter base collector in 2N5777 photo transistors? What will happen if generator is overexcited? What are the safety precautions used in electrical safety? How will the armature current and the output power of a dc shunt motors change with increasing load? Why program counter and stack pointer is 16- bit? How do you calculate voltage regulation of 33kv and 11kv distributions? What is a urinal divider? What will happen if a 250 VDC coil is used to replace a 440 VDC coil? Can you replace a npn transistor by a pnp transistor? What is the maximum current recommended for 30 gauge copper wire? Explain the origin of finite output resistance of MOSFET devices? What does MV stand for? What kind of metals are used to make thermocouples? What is dielectric absorption ratio? What is a good tester to check ripple current?