Chapter 9 · MCQ Read Mode

Power Systems and Devices

The correct order of stages in a power system is:

A thermal power plant primarily converts which form of energy to drive its turbine?

Which turbine type is commonly used in hydro power plants with high head?

A solar photovoltaic (PV) system generates electricity by:

A fuel cell generates electricity through:

Geothermal power plants generate electricity using:

Tidal power generation is most similar in operating principle to:

Energy storage systems in a power grid are primarily used to:

Nuclear power plants generate steam using heat produced by:

Generating stations are typically located far from load centers mainly because of:

AC is preferred over DC for most power transmission mainly because:

Kelvin's Law for economical conductor size states that the most economical size is where:

ACSR conductors combine aluminium with a steel core primarily to provide:

Corona discharge on a transmission line occurs when:

A radial distribution system is characterized by:

The load factor of a power system is defined as:

Demand factor is defined as:

A load duration curve differs from a load curve in that it:

Interference between power lines and nearby communication lines is primarily mitigated using:

Power Line Carrier Communication (PLCC) uses:

The primary goal of power system protection is to:

A fuse protects a circuit by:

SF₆ circuit breakers are valued for their:

A differential relay operates based on:

A distance (impedance) relay is typically used to protect:

The main purpose of earthing (grounding) equipment is to:

Surge protection devices are designed to:

Load shedding differs from a blackout in that load shedding is:

SCADA systems are primarily used for:

A Smart Grid is distinguished from a conventional grid mainly by its use of:

Service mains refer to the connection between:

The most common wiring method in modern residential buildings is:

An electrical layout drawing for a building primarily shows:

Load estimation for a distribution board applies:

Industrial motor loads typically require which type of supply for larger ratings?

Motor starting current is typically:

A maximum-demand tariff bills the consumer based on:

Poor power factor in an industrial load typically results in:

Which of the following is an energy conservation measure in buildings?

A ring distribution circuit within a building is chosen mainly for:

A Silicon Controlled Rectifier (SCR) conducts current in:

An SCR is turned OFF (commutated) when:

A diac is best described as a:

A triac is functionally equivalent to:

Forced commutation of a thyristor is typically required in:

An SMPS achieves higher efficiency than a linear regulator mainly because:

A buck converter is a type of DC-DC converter that:

An inverter is a power electronic device that converts:

An Uninterrupted Power Supply (UPS) provides continuous power to a load primarily using:

Which device is commonly used to trigger a triac into conduction?

Which fault type produces the highest fault current, used to rate circuit breakers?

The most common type of fault occurring on a power system is:

Unsymmetrical (unbalanced) faults are analyzed using:

In load flow analysis, the slack (swing) bus is characterized by:

A PV bus in load flow analysis has known:

Compared to the Gauss-Seidel method, the Newton-Raphson method for load flow offers:

Transient stability of a power system refers to its ability to:

The equal area criterion is used to assess:

The swing equation describes:

Dynamic stability studies specifically account for the effect of:

The Fourier Transform is used to:

When a square wave is applied to an integrator op-amp circuit, the output is:

The Z-transform is primarily used for:

Interleaving in digital communications provides what type of diversity?

In FDM, increasing the modulation index results in:

Adding zeros to the end of a discrete signal before taking its DFT is called:

In TDM (Time Division Multiplexing), the component essential for recovering individual channels at the receiver is:

In a common-collector (emitter follower) BJT amplifier, the phase relationship between input and output is: